C program to compare two string without using string library functions and with using loop.












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C program to compare two string without using string library functions and with using loop.




C program to compare two string without using string library functions and with using loop.




#include <stdio.h>

#define MAX 100
int compare(char * text1, char * text2);


int main()
{
    char text1[MAX], text2[MAX];
    int result;

    printf("\n Enter first string: ");
    gets(text1);
    printf("\n Enter second string: ");
    gets(text2);



    result = compare(text1, text2);

    if(result == 0)
    {
        printf("\n Both or two strings are equal.");
    }
    else if(result < 0)
    {
        printf("First string is lexicographically smaller than second.");
    }
    else
    {
        printf("First string is lexicographically greater than second.");
    }

    return 0;
}


int compare(char * text1, char * text2)
{
    int i = 0;

    while(text1[i] == text2[i])
    {
        if(text1[i] == '\0' && text2[i] == '\0')
            break;

        i++;
    }


    return text1[i] - text2[i];
}


Output:

 
 Enter first string: computer

 Enter second string: computer

 Both or two strings are equal.



 Enter first string: computer

 Enter second string: Computer

 First string is lexicographically greater than second.



 Enter first string: computer

 Enter second string: Computer

 First string is lexicographically greater than second.




Exercise: 1
C program to compare two strings.






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