strupr() function (to upper-case) in C.

 

01  #include<stdio.h>
02 #include<string.h>
03
04 int main()
05 {
06
07 char str[20] = "happy birthday";
08 printf("Original string is: %sn", str);
09 strupr(str);
10 printf("String after strupr: %sn", str);
11 return 0;
12
13 }
 
 OUTPUT :

Original string is: happy birthday

String after strupr: HAPPY BIRTHDAY

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