added programs

programs/prog5/main.c

@@ -0,0 +1,12 @@
+#include <stdio.h>
+
+int main(void) {
+    int no;
+
+    printf("Input an integer: ");
+    scanf("%d", &no);
+
+    printf("You inputed %d.\n", no);
+
+    return 0;
+}