added src code

1 files changed, 25 insertions, 0 deletions

diff --git a/main.c b/main.c
new file mode 100644
index 0000000..30d5c61
--- /dev/null
+++ b/main.c
@@ -0,0 +1,25 @@
+#include <stdio.h>
+
+// Function that tries to change a number without pointer
+void noPointerChange(int num) {
+    num = 100;  // Changes local copy only
+}
+
+// Function that changes a number using pointer
+void pointerChange(int *numPtr) {
+    *numPtr = 100;  // Changes original value through pointer
+}
+
+int main() {
+    int value = 50;
+
+    printf("Before noPointerChange: %d\n", value);
+    noPointerChange(value);
+    printf("After noPointerChange: %d\n", value);  // value unchanged
+
+    printf("Before pointerChange: %d\n", value);
+    pointerChange(&value);
+    printf("After pointerChange: %d\n", value);    // value changed
+
+    return 0;
+}