diff --git a/a.exe b/a.exe
new file mode 100755
index 0000000..03ca527
Binary files /dev/null and b/a.exe differ
diff --git a/arrayfunc.c b/arrayfunc.c
new file mode 100755
index 0000000..09e1a9d
--- /dev/null
+++ b/arrayfunc.c
@@ -0,0 +1,21 @@
+#include <stdio.h>
+
+void myFunc(int myNum[5]) {
+    for (int i = 0; i < 5; i++) {
+        printf("%d\n", myNum[i]);
+    }
+
+    {
+        int i = 0;
+        while (i < 5) {
+            printf("%d\n", myNum[i]);
+            i++;
+        }
+    }
+}
+
+int main() {
+    int myNum[5] = {25, 50, 75, 100, 125};
+    myFunc(myNum);
+return 0;
+}
\ No newline at end of file
diff --git a/arrays.c b/arrays.c
new file mode 100755
index 0000000..a2c296d
--- /dev/null
+++ b/arrays.c
@@ -0,0 +1,12 @@
+#include <stdio.h>
+
+int main() {
+
+    int myNumbers[] = {11, 22, 33, 44, 55};
+    printf("%d\n", myNumbers[4]);    
+    int matrix[2][3] = { {1, 4, 9}, {2, 5, 7} };
+    printf ("%d\n", matrix[1][2]);
+    printf ("%p", &myNumbers);
+
+     return 0;
+ }
diff --git a/booleans.c b/booleans.c
new file mode 100755
index 0000000..01c8ab7
--- /dev/null
+++ b/booleans.c
@@ -0,0 +1,14 @@
+#include <stdbool.h>
+#include <stdio.h>
+int main() {
+    int votingAge = 18;
+    int myAge = 18;
+    if (myAge > votingAge) {
+        printf("Oy verebilirsiniz!");
+    } else if (myAge == votingAge) {
+        printf("test2");
+    } else {
+        printf("test1");
+    }
+    
+}
\ No newline at end of file
diff --git a/charfunc.c b/charfunc.c
new file mode 100755
index 0000000..3ff5bc0
--- /dev/null
+++ b/charfunc.c
@@ -0,0 +1,11 @@
+#include <stdio.h>
+
+void myFunc(char name[], int age) {
+    printf("Hello %s. You're %d years old\n", name, age);
+}
+
+int main() {
+    myFunc("Liam", 3);
+    myFunc("Ahmet", 30);
+return 0;
+}
\ No newline at end of file
diff --git a/declarition.c b/declarition.c
new file mode 100755
index 0000000..358b51e
--- /dev/null
+++ b/declarition.c
@@ -0,0 +1,13 @@
+#include <stdio.h>
+
+int myFunc(int,int);
+
+int main(){
+    int result = myFunc(5, 3);
+    printf("Result is %d", result);
+return 0;
+}
+
+int myFunc(int x, int y){
+    return x + y;
+}
\ No newline at end of file
diff --git a/fgets.c b/fgets.c
new file mode 100755
index 0000000..bbd87a9
--- /dev/null
+++ b/fgets.c
@@ -0,0 +1,14 @@
+#include <stdio.h>
+int main() {
+    int test1;
+    char test2[50];
+    char test3[50];
+
+    printf("Test box! : ");
+    fgets(test2, sizeof(test2), stdin);
+    printf("WORKING! : %s", test2);
+    printf("TEST2! : ");
+    fgets(test3, sizeof(test3), stdin);
+    printf("WORKING2!: %s", test3);
+return 0;
+}
\ No newline at end of file
diff --git a/file.c b/file.c
new file mode 100755
index 0000000..2999d54
--- /dev/null
+++ b/file.c
@@ -0,0 +1,12 @@
+#include <stdio.h>
+
+int main() {
+
+    FILE *fptr;
+
+    fptr = fopen("test1.txt", "a");
+    fprintf(fptr, "\nThis is Working!");
+    fclose(fptr);
+
+return 0;
+}
\ No newline at end of file
diff --git a/fileopen.c b/fileopen.c
new file mode 100755
index 0000000..0abf70d
--- /dev/null
+++ b/fileopen.c
@@ -0,0 +1,16 @@
+#include <stdio.h>
+
+int main () {
+
+    FILE *fptr;
+
+    fptr = fopen("test1.txt", "r");
+    char myStr[100];
+
+    while(fgets(myStr, 100, fptr)) {
+    printf("%s", myStr);
+    }
+    fclose (fptr);
+
+return 0;
+}
\ No newline at end of file
diff --git a/for loop.c b/for loop.c
new file mode 100755
index 0000000..fc90ce1
--- /dev/null
+++ b/for loop.c	
@@ -0,0 +1,15 @@
+#include <stdio.h>
+
+int main() {
+
+int i, j;
+
+for (i = 1; i <= 2; ++i) {
+   printf("test: %d\n", i);
+
+        for (j = 1; j <= 3; ++j) {
+        printf("test2 : %d\n", j);
+ }
+}   
+    return 0;
+}
\ No newline at end of file
diff --git a/function.c b/function.c
new file mode 100755
index 0000000..2574391
--- /dev/null
+++ b/function.c
@@ -0,0 +1,11 @@
+#include <stdio.h>
+
+void myFunc() {
+    printf("My first Function!");
+
+}
+
+int main() {
+    myFunc();
+return 0;
+}
\ No newline at end of file
diff --git a/function2.c b/function2.c
new file mode 100755
index 0000000..560356c
--- /dev/null
+++ b/function2.c
@@ -0,0 +1,12 @@
+#include <stdio.h>
+
+int myProg(int x) {
+    return x + 3;
+}
+
+int main() {
+
+    int y = 5;
+    printf("%d\n", myProg(y));
+return 0;
+}
\ No newline at end of file
diff --git a/hello.c b/hello.c
new file mode 100755
index 0000000..0bb36a3
--- /dev/null
+++ b/hello.c
@@ -0,0 +1,27 @@
+#include <stdio.h>
+
+int main() {
+// Learning C types
+int myNum;
+char myChar;
+float myFloat;
+myChar = 'a';
+myFloat = 1.55;
+int myNumero = 11;
+myNum = myNumero;
+int x = 4;
+int y = 10;
+int suma = x + y;
+int a = 10, b = 20, c = 30;
+float sum = (float) y / x;
+int myInt = 9.99;
+    //printf("My fav number is :%d\n", myNum);
+    printf("%lu\n", sizeof(myFloat));
+    printf("%lu\n", sizeof(myChar));
+    //printf("My fav number is: %d\t and My fav character is: %c\n", myNum, myChar);
+    printf("%lu\n", sizeof(suma));
+    //printf("%d\n", a + b +c);
+    //printf("%.1f\n", sum);
+    printf("%lu\n", sizeof(myInt));
+    return 0;
+}
\ No newline at end of file
diff --git a/input.c b/input.c
new file mode 100755
index 0000000..d76ec14
--- /dev/null
+++ b/input.c
@@ -0,0 +1,14 @@
+#include <stdio.h>
+
+int main() {
+
+    int sakiriNum;
+    char sakireDeger[30];
+    printf("Please, enter a number: \n");
+    scanf("%d", &sakiriNum);
+    printf("Please, enter your name: \n");
+    scanf("%s", sakireDeger);
+    printf("You pressed sakir: %d,", sakiriNum);
+    printf(" %s!", sakireDeger);
+return 0;
+}
\ No newline at end of file
diff --git a/learnc/a.exe b/learnc/a.exe
new file mode 100755
index 0000000..194a1b0
Binary files /dev/null and b/learnc/a.exe differ
diff --git a/learnc/learnc1.c b/learnc/learnc1.c
new file mode 100755
index 0000000..75e85f1
--- /dev/null
+++ b/learnc/learnc1.c
@@ -0,0 +1,33 @@
+	#include <stdio.h>
+
+	int main() {
+		float average;
+        int grades[2][5];
+		int i;
+		int j;
+
+		grades[0][0] = 80;
+		grades[0][1] = 70;
+		grades[0][2] = 65;
+		grades[0][3] = 89;
+		grades[0][4] = 90;
+
+		grades[1][0] = 85;
+		grades[1][1] = 80;
+		grades[1][2] = 80;
+		grades[1][3] = 82;
+		grades[1][4] = 87;
+
+		/* TODO: complete the for loop with appropriate terminating conditions */
+		for (i = 0; i < 2; i++) {
+			average = 0;
+			for (j = 0; j < 5; j++) {
+				average += grades[i][j];
+			}
+
+			/* TODO: compute the average marks for subject i */
+			printf("The average marks obtained in subject %d is: %.2f\n", i, average);
+		}
+
+		return 0;
+	}
diff --git a/learnc/learnc10.c b/learnc/learnc10.c
new file mode 100755
index 0000000..73ddb24
--- /dev/null
+++ b/learnc/learnc10.c
@@ -0,0 +1,23 @@
+#include <stdio.h>
+
+typedef struct {
+  char * name;
+  int age;
+} person;
+
+/* function declaration */
+void birthday(person * p) {
+
+    p->age++;
+}
+int main() {
+  person john;
+  john.name = "John";
+  john.age = 27;
+
+  printf("%s is %d years old.\n", john.name, john.age);
+  birthday(&john);
+  printf("Happy birthday! %s is now %d years old.\n", john.name, john.age);
+
+  return 0;
+}
\ No newline at end of file
diff --git a/learnc/learnc11.c b/learnc/learnc11.c
new file mode 100755
index 0000000..ca4adaf
--- /dev/null
+++ b/learnc/learnc11.c
@@ -0,0 +1,19 @@
+#include <stdio.h>
+#include <stdlib.h>
+
+typedef struct {
+  int x;
+  int y;
+} point;
+
+int main() {
+  point * mypoint;
+    mypoint = (point *)malloc(sizeof(point));
+    
+  mypoint->x = 10;
+  mypoint->y =5 ;
+  printf("mypoint coordinates: %d, %d\n", mypoint->x, mypoint->y);
+
+  free(mypoint);
+  return 0;
+}
\ No newline at end of file
diff --git a/learnc/learnc2.c b/learnc/learnc2.c
new file mode 100755
index 0000000..5816088
--- /dev/null
+++ b/learnc/learnc2.c
@@ -0,0 +1,17 @@
+#include <stdio.h>
+
+void guessNumber(int guess) {
+    
+    if (guess == 555) {
+    printf("Correct. You guessed it!\n");
+     } if (guess < 555) {
+    printf("Your guess is too low.\n");
+    } if (guess > 555) {
+    printf("Your guess is too high.\n");
+}
+}
+int main() {
+    guessNumber(500);
+    guessNumber(600);
+    guessNumber(555);
+}
diff --git a/learnc/learnc3.c b/learnc/learnc3.c
new file mode 100755
index 0000000..5c92644
--- /dev/null
+++ b/learnc/learnc3.c
@@ -0,0 +1,18 @@
+#include <stdio.h>
+#include <string.h>
+int main() {
+    char first_name[5] = "John";
+    char last_name[4] = "Boe";
+  char name[100];
+
+  last_name[0] = 'B';
+  sprintf(name, "%s %s", first_name, last_name);
+  if (strncmp(name, "John Boe", 100) == 0) {
+      printf("Done!\n");
+  }
+  name[0]='\0';
+  strncat(name,first_name,4);
+  strncat(name,last_name,20);
+  printf("%s\n",name);
+  return 0;
+}
diff --git a/learnc/learnc4.c b/learnc/learnc4.c
new file mode 100755
index 0000000..a41fc87
--- /dev/null
+++ b/learnc/learnc4.c
@@ -0,0 +1,13 @@
+#include <stdio.h>
+
+int main() {
+  int array[] = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 };
+  int factorial = 1;
+  int i;
+
+  for (i = 0; i < 10; i++) {
+    factorial *= array[i];
+  }
+  
+  printf("10! is %d.\n", factorial);
+}
diff --git a/learnc/learnc5.c b/learnc/learnc5.c
new file mode 100755
index 0000000..5c9b803
--- /dev/null
+++ b/learnc/learnc5.c
@@ -0,0 +1,22 @@
+#include <stdio.h>
+
+int main() {
+    int array[] = {1, 7, 4, 5, 9, 3, 5, 11, 6, 3, 4};
+    int i = 0;
+
+    while (i < 10) {
+        if (array[i] < 5){
+        i++;
+        continue;
+        }
+        
+        if (array[i] < 10) {
+        printf("%d\n", array[i]);
+        i++;
+        if (array[i] > 10){
+        break;
+        }
+    }
+}
+    return 0;
+}
diff --git a/learnc/learnc6.c b/learnc/learnc6.c
new file mode 100755
index 0000000..3073631
--- /dev/null
+++ b/learnc/learnc6.c
@@ -0,0 +1,17 @@
+#include <stdio.h>
+
+void print_big(int number);
+
+int main() {
+  int array[] = { 1, 11, 2, 22, 3, 33 };
+  int i;
+  for (i = 0; i < 6; i++) {
+    print_big(array[i]);
+  }
+  return 0;
+}
+void print_big(int number) {  
+  if(number > 10) {
+    printf("%d is big\n",number);
+}
+}
diff --git a/learnc/learnc7.c b/learnc/learnc7.c
new file mode 100755
index 0000000..9d2989b
--- /dev/null
+++ b/learnc/learnc7.c
@@ -0,0 +1,13 @@
+   #include <stdio.h>
+   int sum (int num) {
+    static int total = 0;
+    total += num;
+    return total;
+   }
+
+   int main() {
+       printf("%d ",sum(55));
+       printf("%d ",sum(45));
+       printf("%d ",sum(50));
+       return 0;
+   }
\ No newline at end of file
diff --git a/learnc/learnc8.c b/learnc/learnc8.c
new file mode 100755
index 0000000..241099a
--- /dev/null
+++ b/learnc/learnc8.c
@@ -0,0 +1,15 @@
+#include <stdio.h>
+
+int main() {
+  int n = 10;
+
+  int * pointer_to_n = &n;
+  n += 1;
+
+  /* testing code */
+  if (pointer_to_n != &n) return 1;
+  if (*pointer_to_n != 11) return 1;
+
+  printf("Done!\n");
+  return 0;
+}
\ No newline at end of file
diff --git a/learnc/learnc9.c b/learnc/learnc9.c
new file mode 100755
index 0000000..f43ec24
--- /dev/null
+++ b/learnc/learnc9.c
@@ -0,0 +1,15 @@
+#include <stdio.h>
+
+typedef struct {
+    char * name;
+    int age;
+} person;
+
+int main() {
+    person john;
+
+    /* testing code */
+    john.name = "John";
+    john.age = 27;
+    printf("%s is %d years old.", john.name, john.age);
+}
\ No newline at end of file
diff --git a/loop.c b/loop.c
new file mode 100755
index 0000000..98ded5f
--- /dev/null
+++ b/loop.c
@@ -0,0 +1,11 @@
+#include <stdio.h>
+int main() {
+    int i = 0;
+
+while (i >= 5) { 
+
+    printf("%d\n", i);
+    i++;
+}
+
+}
\ No newline at end of file
diff --git a/math.c b/math.c
new file mode 100755
index 0000000..eb63013
--- /dev/null
+++ b/math.c
@@ -0,0 +1,16 @@
+#include <stdio.h>
+#include <math.h>
+
+int myProg(int, int);
+
+int main(){
+    float fullNum;
+    int b;
+
+    printf("Lutfen rakam giriniz! \n");
+    scanf("%f\n", &fullNum);
+    printf("%f\n", ceil(fullNum));
+    printf("%f", floor(fullNum));
+return 0;
+
+}
\ No newline at end of file
diff --git a/matrix.c b/matrix.c
new file mode 100755
index 0000000..db2940f
--- /dev/null
+++ b/matrix.c
@@ -0,0 +1,13 @@
+#include <stdio.h>
+
+int main() {
+
+    int matrix[2][3] = { {1, 2, 3}, {4, 5, 6} };
+    int i,j;
+    for (i = 0; i < 2; i++) {
+        for (j = 0; j < 3; j++) {
+            printf ("%d\n", matrix[i][j]);
+        }
+    }
+    return 0;
+}
\ No newline at end of file
diff --git a/pointer.c b/pointer.c
new file mode 100755
index 0000000..5d335a7
--- /dev/null
+++ b/pointer.c
@@ -0,0 +1,14 @@
+#include <stdio.h>
+
+int main () {
+
+    int speedTrain = 150;
+    int* ptr = &speedTrain;
+
+    printf("%d\n", speedTrain);
+    printf("%p\n", &speedTrain);
+    printf("%p\n", ptr);
+    printf("%d\n", *ptr);
+
+return 0;
+}
\ No newline at end of file
diff --git a/pointerarrays.c b/pointerarrays.c
new file mode 100755
index 0000000..0cdc64b
--- /dev/null
+++ b/pointerarrays.c
@@ -0,0 +1,16 @@
+#include <stdio.h>
+
+int main() {
+    int myNum[4] = {25, 50, 75, 100};
+    int i;
+    int j;
+
+    for (i = 0; i < 4; i++) {
+        printf("%p\n", &myNum[i]);
+    }
+    printf("%lu\n", sizeof(j));
+    printf("%p\n", myNum);
+    printf("%p\n", &myNum[0]);
+    printf("%lu\n", sizeof(myNum));
+return 0;
+}
\ No newline at end of file
diff --git a/pointerarrays2.c b/pointerarrays2.c
new file mode 100755
index 0000000..fa78b73
--- /dev/null
+++ b/pointerarrays2.c
@@ -0,0 +1,15 @@
+#include <stdio.h>
+int main() {
+    
+    int myNumbers[4] = {25, 50, 75, 100};
+    int *ptr = myNumbers;
+    int i;
+    *myNumbers = 101;
+    *(myNumbers + 1) = 55;
+
+    for (i = 0; i < 4; i++) {
+        printf("%d\n", *(ptr + i));
+    }
+    printf("%d\n", *(myNumbers + 1));
+return 0;
+}
\ No newline at end of file
diff --git a/recursion.c b/recursion.c
new file mode 100755
index 0000000..3874626
--- /dev/null
+++ b/recursion.c
@@ -0,0 +1,22 @@
+#include <stdio.h>
+
+int myProg(int k);
+
+int main() {
+    int b;
+    printf("Type a num: \n");
+    scanf("%d", &b);
+    int result = myProg(b);
+    printf("%d\n", result);
+return 0;
+
+}
+
+int myProg(int k) {
+    if (k > 10) {
+        return k + myProg(k - 1);
+    } else {
+        return 0;
+    }
+
+}
\ No newline at end of file
diff --git a/specialstrings.c b/specialstrings.c
new file mode 100755
index 0000000..438c09a
--- /dev/null
+++ b/specialstrings.c
@@ -0,0 +1,7 @@
+#include <stdio.h>
+
+int main () {
+    char txt[] = "If i live in a \"different\" universe i love you";
+    printf ("%s", txt);
+return 0;
+}
\ No newline at end of file
diff --git a/string.c b/string.c
new file mode 100755
index 0000000..991f66a
--- /dev/null
+++ b/string.c
@@ -0,0 +1,10 @@
+#include <stdio.h>
+#include <string.h>
+
+int main () {
+    char test[40] = "TESTING";
+    char test2[50] = " WORKING";
+    char test3[50] = "TESTING";
+    printf("%d", strcmp(test, test3));
+return 0;
+}
\ No newline at end of file
diff --git a/strings.c b/strings.c
new file mode 100755
index 0000000..9179c64
--- /dev/null
+++ b/strings.c
@@ -0,0 +1,8 @@
+#include <stdio.h>
+
+int main () {
+    char greetings[] = "Hello!";
+    greetings[0] = 'Y';
+    printf("%s\n", greetings);
+return 0;
+}
\ No newline at end of file
diff --git a/stringsloop.c b/stringsloop.c
new file mode 100755
index 0000000..e8ca2a8
--- /dev/null
+++ b/stringsloop.c
@@ -0,0 +1,17 @@
+#include <stdio.h>
+
+int main () {
+    char carName[] = "GOLF";
+    int i;
+    int j = 0;
+    while (j < 5) {
+
+        for (i = 0; i < 5; i++) {
+            printf ("%c\t", carName[i]);
+        
+        }
+        printf ("\n");
+    j++;
+    }
+return 0;
+}
\ No newline at end of file
diff --git a/structer.c b/structer.c
new file mode 100755
index 0000000..7265e95
--- /dev/null
+++ b/structer.c
@@ -0,0 +1,28 @@
+#include <stdio.h>
+#include <string.h>
+
+struct myStruct {
+    int myNum;
+    char myLtr;
+    char myString[30];
+};
+
+int main () {
+
+    struct myStruct s1;
+    s1.myNum = 10;
+    s1.myLtr = 'a';
+    strcpy(s1.myString, "Greetings!");
+
+    struct myStruct s2;
+    s2.myNum = 19;
+    s2.myLtr = 'C';
+
+    printf("%s\n", s1.myString);
+    printf("%d\n", s1.myNum);
+    printf("%c\n", s1.myLtr);
+    printf("%d\n", s2.myNum);
+    printf("%c\n", s2.myLtr);
+
+return 0;
+}
\ No newline at end of file
diff --git a/structer2.c b/structer2.c
new file mode 100755
index 0000000..ffa9090
--- /dev/null
+++ b/structer2.c
@@ -0,0 +1,17 @@
+#include <stdio.h>
+#include <string.h>
+
+struct myStruct {
+    int myNum;
+    char myNam[30];
+};
+
+
+int main () {
+
+    struct myStruct s3 = {15, "Hello World!"};
+    printf("%d\n%s", s3.myNum, s3.myNam);
+
+    return 0;
+
+}
\ No newline at end of file
diff --git a/switch.c b/switch.c
new file mode 100755
index 0000000..2db459a
--- /dev/null
+++ b/switch.c
@@ -0,0 +1,42 @@
+#include <stdio.h>
+int main() {
+    int day = 8;
+    
+    
+    switch (day) {
+    
+    case 1:
+        printf("monday");
+        break;
+    
+    case 2:
+        printf("tuesday");
+        break;
+    
+    case 3:
+        printf("wednesday");
+        break;
+    
+    case 4:
+        printf("thursday");
+        break;
+
+    case 5:
+        printf("friday");
+        break;
+    
+    case 6:
+        printf("saturday");
+        break;
+
+    case 7:
+        printf("sunday");
+        break;
+
+    default:
+     printf("there's 7 day in week!");
+     
+    }
+
+
+}
\ No newline at end of file
diff --git a/test1.txt b/test1.txt
new file mode 100755
index 0000000..cabb56a
--- /dev/null
+++ b/test1.txt
@@ -0,0 +1,2 @@
+Hello World!
+This is Working!
\ No newline at end of file
diff --git a/test2.c b/test2.c
new file mode 100755
index 0000000..2e93373
--- /dev/null
+++ b/test2.c
@@ -0,0 +1,7 @@
+#include <stdio.h> 
+    int main() {
+int x = 7;
+int y = 5;
+printf ("%d\n", !(x > 4 && y > 4));
+
+    }