Input a character. If the character is between ‘A’-‘Z’ convert to small letter. If the character is between ‘a’-‘z’ convert to capital letter.

#include <stdio.h>

void main ()

{

      char a ;

      printf("enter letter= ");

      scanf("%c", &a);

    if("a>=97 && a<=122")

        printf("capital letter:%c\n", a-32);

      if("a>=65 && a<=90")

            printf("small letter:%c\n", a+32);

     

}