bsc

root / semester_1 / practice-c / external_7.c

external_7.c (524B)

---

 // 7. Write a program to swap two numbers using a macro.
 
 #include<stdio.h>
 
 #define SWAP(a, b)              	   \
         do {                           \
             __typeof__(a) temp = a;    \
             a = b;              	   \
             b = temp;           	   \
         } while (0)             	   \
 
 int main() {
     int a, b;
     printf("Enter two number: ");
     scanf("%d %d", &a, &b);
     printf("\nA = \'%d\', B = \'%d\'", a, b);
     SWAP(a, b);
     printf("\nA = \'%d\', B = \'%d\'", a, b);
     return 0;
 }