Question

Declare a function that checks whether two strings are equal. In function main, read two strings, call the function and print “equal” if the strings are equal and “not equal” otherwise. The input strings contain at most 50 characters.

Example of input: alphabet alphabet Corresponding output: equal

Example of input: week weak Corresponding output: not equal

In C Language

Answer 1

Answer)

String comparison program:

#include <stdio.h>

int check_equal(char [], char []);

int main()
{
char string1[50], string2[50];

printf("Enter the first string: \n");
gets(string1);

printf("Enter the second string: \n");
gets(string2);

if (check_equal(string1, string2) == 0)
printf("Equal\n");
else
printf("Not Equal\n");

return 0;
}

int check_equal(char string1[], char string2[])
{
int i = 0;

while (string1[i] == string2[i]) {
if (string1[i] == '\0' || string2[i] == '\0')
break;
i++;
}

if (string1[i] == '\0' && string2[i] == '\0')
return 0;
else
return -1;
}

Output:
Enter the first string:   
weak
Enter the second string:
week
Not Equal

Enter the first string:   
week
Enter the second string:
week
Equal