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  1. #include <stdio.h>
  2. #include <ctype.h>
  3. int main() {
  4.     int i = 0;
  5.     char str[] = "foobar";
  6.     while(str[i]) {
  7.         putchar (toupper(str[i]));
  8.         i++;
  9.     }
  10.     return(0);
  11. }
Success #stdin #stdout 0s 2168KB
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stdin
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Standard input is empty
stdout
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FOOBAR
https://ideone.com/VQdpVo
language:
C (gcc 8.3)
created:
9 years ago
visibility:
public

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