Program to compare two strings

compare two Strings Program in C

To compare any two string first we need to find length of each string and then compare both strings. If both string have same length then comapre character by character of each string. In below code we write program to Compare two Strings Program in C

#include<stdio.h>
#include<conio.h>

void main()
 {
 char str1[20],str2[20],i,j,flag=0;
 clrscr();
 printf("Enter first string: ");
 gets(str1);
 printf("Enter Second string: ");
 gets(str2);
 i=0;
 j=0;
  while(str1[i]!='\0')
  {
   i++;
  }
  while(str2[j]!='\0')
  {
   j++;
  }
 if(i!=j)
 {
 flag=0;
 }
 else
 {
 for(i=0,j=0;str1[i]!='\0',str2[j]!='\0';i++,j++)
 {
 if(str1[i]==str2[j])
 {
 flag=1;
 }
 }
 }
 if(flag==0)
 {
 printf("Strings are not equal");
 }
 else
 {
 printf("Strings are equal");
 }
 getch();
}

Enter First String : rajess
Enter Second String : rajesh
Strings are not equal