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  1. #include<stdio.h>
  2. void swap(int *pp[]);
  3. int main(void){
  4. 	int a=1;
  5. 	int b=2;
  6. 	int *p[2]={&a,&b};
  7. 	int size=sizeof(p)/sizeof(p[0]);
  8. 	for(int i=0;i<2;i++){
  9. 		printf("before:p[%d]:%p\n",i,p[i]);
  10. 	}
  11. 	swap_pointer(p);
  12. 	for(int i=0;i<size;i++){
  13. 		printf("after:p[%d]:%p\n",i,p[i]);
  14. 	}
  15. 	return 0;
  16. }
  17. void swap_pointer(int *pp[]){
  18. 	int *temp;
  19. 	temp=pp[0];
  20. 	pp[0]=pp[1];
  21. 	pp[1]=temp;
  22. }
Success #stdin #stdout 0.01s 5220KB
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stdin
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Standard input is empty
stdout
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before:p[0]:0x7ffffdc34cb0
before:p[1]:0x7ffffdc34cb4
after:p[0]:0x7ffffdc34cb4
after:p[1]:0x7ffffdc34cb0
https://ideone.com/G5K4gJ
language:
C (gcc 8.3)
created:
1 day ago
visibility:
public

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