Change case of character

Q. Write a C program to accept a character from user and convert it opposite case.

For example, if user enter character d then it is will convert in upper-case D.

Ans.

/*c program to convert character upper-case to lower case and vice verse*/

#include<stdio.h>
#include<conio.h>
int main()
{
 char ch;
 printf("Enter any character : ");
 scanf("%ch", &ch);
 if(ch>='A' && ch<='Z')
     ch=ch+32;
 else if(ch>'a' && ch<='z')
     ch=ch-32;
 printf("Convert case of character : %c",ch);
 getch();
 return 0;
}

/*****************Output******************/

Screen shot for change case of entered character by user

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