C String Uppercase: strupr()

The strupr(string) function returns string characters in uppercase. Let's see a simple example of strupr() function.

#include<stdio.h>
#include <string.h>  
int main(){  
  char str[20];  
  printf("Enter string: ");  
  gets(str);//reads string from console  
  printf("String is: %s",str);  
  printf("\nUpper String is: %s",strupr(str));  
 return 0;  
}  

Output:

Enter string: javatpoint
String is: javatpoint
Upper String is: JAVATPOINT

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