- # 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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