# include <stdio.h>
void myToUpper(char s[]){
for(int i=0;s[i]!='\0';i++){
if('a'<=s[i]&&s[i]>='z'){
s[i]=s[i]-32;
}
}
return;
}
int main(){
char s[100];
myToUpper(s);
return 0;
}
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