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  1. #include <stdio.h>
  2. #include <ctype.h>
  3.  
  4. int main(void) {
  5.    char c;
  6.    while (1) {
  7.       printf("> ");
  8.       scanf("%c%*c", &c);
  9.       if (c == '0') {
  10.          break;
  11.       } else {
  12.          printf("%c\n", toupper(c));
  13.       }
  14.    }
  15.    return 0;
  16. }
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https://ideone.com/EKK2Cu
language:
C (gcc 8.3)
created:
11 years ago
visibility:
public

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