fork download
copy 
  1. #include <stdio.h>
  2. void reverse(char*str){
  3. 	int len = strlen(str);
  4. 	char*p1 = str;
  5. 	char*p2 = str + len - 1;
  6. 	while(p1<p2){
  7. 		char t = *p1;
  8. 		*p1 = *p2;
  9. 		*p2 = t;
  10. 		p1++;
  11. 		p2--;
  12. 	}
  13. }
  14. int main(int argc, char*argv[]){
  15. 	char str[100] = "ABCDEFGH";
  16. 	reverse(str);
  17. 	int len = strlen(str);
  18. 	for(int i=1; i<len; i+=2){
  19. 		printf("%c",str[i]);
  20. 	}
  21. 	printf("\n");
  22.  
  23.  
  24. 	return 0;
  25. }
  26.  
Success #stdin #stdout 0.01s 5316KB
comments (?)
stdin
copy 
Standard input is empty
stdout
copy 
GECA
https://ideone.com/Kb4maU
language:
C (gcc 8.3)
created:
3 hours ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!