Compare two strings with C.

#include <stdio.h>
#include <string.h>

int main()
{
    char str1[100], str2[100];
    int res;

 
    printf("Enter first string: ");
    gets(str1);
    printf("Enter second string: ");
    gets(str2);

    res = strcmp(str1, str2);

    if (res == 0)
    {
        printf("Both strings are equal.");
    }
    else if (res == -1)
    {
        printf("First string is lexicographically smaller than second.");
    }
    else
    {
        printf("First string is lexicographically greater than second.");
    }

    return 0;
}

Output

Enter first string : Rezaul
Enter second string : Karim
First string is lexicographically greater than second.