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  1. # include <stdio.h>
  2.  
  3. void myToUpper(char s[]){
  4. 	for(int i=0; s[i]!='\0'; i++){
  5. 		if('a'<=s[i] && s[i]<='z')
  6. 			s[i] = s[i] - 32;
  7. 	}
  8. 	return;
  9. }
  10.  
  11. int main(){
  12.     char s[100];
  13.     scanf("%s",s);
  14.     printf("%s -> ",s);
  15.     myToUpper(s);
  16.     printf("%s\n",s);
  17.     return 0;
  18. }
  19.  
Success #stdin #stdout 0s 5328KB
comments (?)
stdin 
aBcDe
stdout 
aBcDe -> ABCDE
https://ideone.com/GK3FU6
language:
C (gcc 8.3)
created:
18 hours ago
visibility:
public

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