C Snippets

Tue 01 January 2013
By Felipe Reyes

Simple Swap Function

#include <stdio.h>

inline void swap(int *a, int *b){
  *a= *a+*b;
  *b=*a-*b;
  *a=*a-*b;
}

int main() {
  int a = 1;
  int b = 2;

  printf("before: a: %d - b: %d\n", a, b);
  swap(&a, &b);

  printf("after: a: %d - b: %d\n", a, b);
  return 0;
}

Expected output:

before: a: 1 - b: 2
after: a: 2 - b: 1
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