From 8e36a1a11cf5da89f9dee90f3d56af97cf43667f Mon Sep 17 00:00:00 2001
From: k0rrluna <k0rr.luna1@gmail.com>
Date: Tue, 4 Feb 2025 08:13:18 +0300
Subject: [PATCH] Chapter3

---
 DeitelC/Chapter3/BinarytoDecimal.c        |  26 +++++++++++
 DeitelC/Chapter3/Crypted.c                |  54 ++++++++++++++++++++++
 DeitelC/Chapter3/DanglingElse.c           |  54 ++++++++++++++++++++++
 DeitelC/Chapter3/HollowSquareOfAsteriks.c |   4 +-
 DeitelC/Chapter3/a.out                    | Bin 0 -> 16064 bytes
 DeitelC/Chapter3/inttest.c                |   6 +++
 6 files changed, 142 insertions(+), 2 deletions(-)
 create mode 100644 DeitelC/Chapter3/BinarytoDecimal.c
 create mode 100644 DeitelC/Chapter3/Crypted.c
 create mode 100644 DeitelC/Chapter3/DanglingElse.c
 create mode 100644 DeitelC/Chapter3/a.out
 create mode 100644 DeitelC/Chapter3/inttest.c

diff --git a/DeitelC/Chapter3/BinarytoDecimal.c b/DeitelC/Chapter3/BinarytoDecimal.c
new file mode 100644
index 0000000..7a04fd0
--- /dev/null
+++ b/DeitelC/Chapter3/BinarytoDecimal.c
@@ -0,0 +1,26 @@
+#include <stdio.h>
+
+int main(void) {
+int i;
+
+puts("Enter binary!");
+scanf("%d", &i);
+
+int t = i;
+int final = 0, power = 1;
+
+while (t > 0) {
+    if(t % 10 == 1) {
+        final = power + final;
+        t = t / 10;
+    } else if (t % 10 == 0) {
+        t = t / 10;
+    } else {
+        puts("NOT BINARY!");
+        return 1;
+    }
+    power = 2 * power;
+}
+printf("Decimal: %d, Binary: %d\n", final, i);
+return 0;
+}
diff --git a/DeitelC/Chapter3/Crypted.c b/DeitelC/Chapter3/Crypted.c
new file mode 100644
index 0000000..1c7dec1
--- /dev/null
+++ b/DeitelC/Chapter3/Crypted.c
@@ -0,0 +1,54 @@
+#include <stdio.h>
+
+int main (void) {
+int i = 0, final = 0, mult = 1;
+puts("Enter 4 digit integer:");
+scanf("%d", &i);
+
+if (i / 1000 >= 10) {
+    puts("More than 4 digit");
+    return 1;
+}
+
+while (i > 0) {
+    int digit = (((i % 10) + 7) %10);
+    final = digit * mult + final;
+    mult *= 10;
+    i /= 10;
+}
+int t = 0000;
+t = (final / 100) % 10;
+t = (final / 1000)*10 + t;
+t = (final%10)*100 + t;
+t = ((final / 10)%10)*1000 + t;
+final = t;
+printf("Crypted int: %d\n", final);
+
+puts("Enter crypted integer: ");
+scanf("%d", &i);
+if (i / 1000 >= 10) {
+    puts("More than 4 digit");
+    return 1;
+}
+
+
+t = i;
+t = (final / 100) % 10;
+t = (final / 1000)*10 + t;
+t = (final%10)*100 + t;
+t = ((final / 10)%10)*1000 + t;
+i = t;
+//printf("Crypted int: %d\n", t);
+
+
+mult = 1, final = 0;
+
+while (i > 0) {
+    int digit = (((i % 10)+3) % 10);
+    final = digit * mult + final;
+    mult *= 10;
+    i /= 10;
+}
+printf("Encypted integer: %d\n", final);
+return 0;
+}
diff --git a/DeitelC/Chapter3/DanglingElse.c b/DeitelC/Chapter3/DanglingElse.c
new file mode 100644
index 0000000..7209fd1
--- /dev/null
+++ b/DeitelC/Chapter3/DanglingElse.c
@@ -0,0 +1,54 @@
+#include <stdio.h>
+
+int main(void) {
+
+puts("a) x = 5 and y = 8");
+
+int x = 5, y = 8;
+
+if (y == 8)
+if (x == 5)
+puts("@@@@@");
+else
+puts("#####");
+puts("$$$$$");
+puts("&&&&&");
+
+
+puts("\nb) x = 5 and y = 8");
+
+if (y == 8) {
+    if (x == 5)
+        puts("@@@@@");
+} else {
+puts("#####");
+puts("$$$$$");
+puts("&&&&&");
+}
+
+puts("\nc) x = 5 and y = 8");
+
+if (y == 8) {
+    if (x == 5)
+        puts("@@@@@");
+} else {
+puts("#####");
+puts("$$$$$");
+}
+puts("&&&&&");
+
+
+puts("\nd) x = 5 and y = 7");
+x = 5, y = 7;
+if (y == 8) {
+    if (x == 5)
+        puts("@@@@@");
+} else {
+puts("#####");
+puts("$$$$$");
+puts("&&&&&");
+}
+
+
+
+}
diff --git a/DeitelC/Chapter3/HollowSquareOfAsteriks.c b/DeitelC/Chapter3/HollowSquareOfAsteriks.c
index 0e1abca..626b9a2 100644
--- a/DeitelC/Chapter3/HollowSquareOfAsteriks.c
+++ b/DeitelC/Chapter3/HollowSquareOfAsteriks.c
@@ -19,7 +19,7 @@ int main(void){
     }
     while(b > 1 && b < a) {
         printf("*");
-        while(c < a) {
+        while(c < a-1) {
             printf(" ");
             c++;
         }
@@ -38,4 +38,4 @@ int main(void){
         b++;
     }
     return 0;
-}
\ No newline at end of file
+}
diff --git a/DeitelC/Chapter3/a.out b/DeitelC/Chapter3/a.out
new file mode 100644
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diff --git a/DeitelC/Chapter3/inttest.c b/DeitelC/Chapter3/inttest.c
new file mode 100644
index 0000000..4e0aca1
--- /dev/null
+++ b/DeitelC/Chapter3/inttest.c
@@ -0,0 +1,6 @@
+#include <stdio.h>
+
+int main(void) {
+printf("%d\n", 4-10);
+return 0;
+}