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  1. # include <stdio.h>
  2.  
  3. void myToUpper(char s[]){
  4.      int i;
  5.      for(i=0;s[i]!='\0';i++){
  6.      	if('a'<=s[i]&&s[i]<='z'){
  7.      		s[i]=s[i]-32;
  8.      	}
  9.      }
  10.      return;
  11. }
  12.  
  13. int main(){
  14.     char s[100];
  15.     scanf("%s",s);
  16.     printf("%s -> ",s);
  17.     myToUpper(s);
  18.     printf("%s\n",s);
  19.     return 0;
  20. }
  21.  
Success #stdin #stdout 0s 5316KB
comments (?)
stdin
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aBcDe
stdout
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aBcDe -> ABCDE
https://ideone.com/we5C0b
language:
C (gcc 8.3)
created:
2 days ago
visibility:
public

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