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  1. #include <stdio.h>
  2.  
  3. void swap(int *x, int *y){
  4.     int temp = *x;
  5.     *x = *y;
  6.     *y = temp;
  7. }
  8.  
  9. void add(int a, int b, int *sum){
  10.     *sum = a + b;
  11. }
  12.  
  13. void sub(int a, int b, int *subtraction){
  14.     *subtraction = a - b;
  15. }
  16.  
  17. int main(){
  18.     int a = 10;
  19.     int b = 10;
  20.     int *ptr = &a;
  21.     int sum, subtraction;
  22.     *ptr = 20;
  23.  
  24.     printf("Value of a: %d\n", a);
  25.     swap(&a, &b);
  26.     printf("value of a:%d and b:%d\n", a, b);
  27.  
  28.     add(a, b, &sum);
  29.     printf("addition a+b :%d\n", sum);
  30.  
  31.     sub(a, b, &subtraction);
  32.     printf("sub a-b :%d\n", subtraction);
  33.     return 0;
  34. }
Success #stdin #stdout 0s 5324KB
comments (?)
stdin 
Standard input is empty
stdout 
Value of a: 20
value of a:10 and b:20
addition a+b :30
sub a-b :-10
https://ideone.com/8xHzs4
language:
C (gcc 8.3)
created:
1 day ago
visibility:
public

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