C/C++ Program to program to compare two strings without using function strcmp, C/C++ Program to program to find whether first string is greater, smaller or equal to second string

C/C++ Program to program to compare two strings without using function strcmp, C/C++ Program to program to find whether first string is greater, smaller or equal to second string

Program

//program to compare two strings without using function strcmp

#include<stdio.h>

#include<conio.h>

#include<string.h>

void main()

{

 char str1[100], str2[100],m,n,i;

 clrscr();

 printf("Enter First String\n");

 scanf("%s",str1);

 printf("\nEnter Second String\n");

 scanf("%s",str2);

 m=strlen(str1);

 n=strlen(str2);

 if(m>n)

 {

  printf("\nString 1 is greater\n");

 }

 else if(m<n)

 {

  printf("\nstring 2 is greater\n");

 }

 else if(m==n)

 {

 for(i=0;i<m;i++)

 if(str1[i]>str2[i])

 {

 printf("\nString 1 is greater\n");

 break;

 }

 else if(str1[i]<str2[i])

 {

 printf("\nString 2 is greater\n");

 break;

 }

}

 if(i==m)

 printf("\nStrings are Equal\n");

 getch();

}

Changes for C++

If you want to write the same program in c++ apply the following changes to the program.

1.) change the header file from "#include<stdio.h>" to "#include<iostream>.h" 

2.)  for input & output use "cout<<" & "cin>>" instead of "printf" & "scanf".

3.) don't use "% "symbol and "&" sign in "cin>>" statement.

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