Lowercase to uppercase

#include

void main()

{

  char ch[20];

  int i=0;

  printf("Enter a string: ");

  while((ch[i]=getchar())!='\n')

      {

        if((ch[i]>='a')&&(ch[i]<='z'))

        {

            ch[i]=ch[i]-32;

        }

        i++;

      }

      i++;

      ch[i]='';

  printf("The uppercase string: ");

  printf(ch);

}

The output of this program will be,

---

Enter a string: vijay pratap singh rajput

The uppercase string: VIJAY PRATAP SINGH RAJPUT