User talk:HEM9

int main {   int a=10, b=20; printf("Before swap a=%d b=%d",a,b); a=a+b;//a=30 (10+20) b=a-b;//b=10 (30-20) a=a-b;//a=20 (30-10) printf("\nAfter swap a=%d b=%d",a,b); return 0; }
 * 1) include