Write a program convert character(String) into TOggLe character(String)

  
   
#include<stdio.h>
void main() {
    char str[100];
    int i;
    printf("Please enter a string: ");
    gets(str);
    for (i = 0; str[i] != NULL; i++) {
        if (str[i] >= 'A' && str[i] <= 'Z')
            str[i] += 32;
        else if (str[i] >= 'a' && str[i] <= 'z')
            str[i] -= 32;
    }
    printf("String in toggle case is: %s", str);
}

Note: Remove the comment line when you are use Turbo C IDE for run your program.