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  1. #include <stdio.h>
  2.  
  3. //HH:MMa/p
  4. i;f(char*p){i=atoi(p)%12+(p[5]^97?12:0);*p=i/10+48;p[1]=i%10+48;p[5]=0;}
  5.  
  6. int main(void) {
  7. 	// your code goes here
  8. 	char t1[] = "12:00a";
  9. 	char t2[] = "01:00a";
  10. 	char t3[] = "11:00a";
  11. 	char t4[] = "12:00p";
  12. 	char t5[] = "01:00p";
  13. 	char t6[] = "11:00p";
  14. 	f(t1); puts(t1);
  15. 	f(t2); puts(t2);
  16. 	f(t3); puts(t3);
  17. 	f(t4); puts(t4);
  18. 	f(t5); puts(t5);
  19. 	f(t6); puts(t6);
  20. 	return 0;
  21. }
  22.  
Success #stdin #stdout 0s 10320KB
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stdin
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Standard input is empty
stdout
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00:00
01:00
11:00
12:00
13:00
23:00
https://ideone.com/R77K7N
language:
C (gcc 8.3)
created:
6 years ago
visibility:
public

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