How to compare two strings using pointer without strcmp

/*C++/CPP/C program to compare two strings without using  library function strcmp*/

#include<stdio.h>

#include<string.h>

int strCmp(char *p1, char *p2);

int main()

{

char arr1[20];

printf("Enter a String:\n");

scanf("%s",&arr1);

char arr2[20];

printf("Enter a String:\n");

scanf("%s",&arr2);

printf("You entered:%s and %s\n",arr1,arr2);

int result;

result=strCmp(arr1, arr2);

if(result==0)

printf("Equal\n");

else

printf("Not Equal.\n");

return 0;

}

int strCmp(char *p1, char *p2)

{

while(*p1++==*p2++)

{

if(*p1=='\0'|| *p2=='\0')

{

break;

}

}//end of while

if(*p1=='\0' && *p2=='\0')

{

return 0;

}

else

{

printf("else\n");

return -1;

}

}

/*

* $ gcc strCmp.c

$ ./a.out

Enter a String:

India

Enter a String:

Indi

You entered:India and Indi

else

Not Equal.

$ ./a.out

Enter a String:

Indi

Enter a String:

India

You entered:Indi and India

else

Not Equal.

$ ./a.out

Enter a String:

India

Enter a String:

India

You entered:India and India

Equal

*/

Previous         Home           Next