c program to compare 2 strings using user defined function
#include<stdio.h>
/* Function Protptype*/
int mystrcmp(char str1[40], char str2[40]);
/* Main Function */
int main()
{
char str1[40], str2[40];
int d;
printf("Enter first string:n");
gets(str1);
printf("Enter second string:n");
gets(str2);
/* Function Call */
d = mystrcmp(str1, str2);
if(d==0)
{
printf("Given strings are same.");
}
else
{
printf("Given strings are different.");
}
return 0;
}
/* Function Definition */
int mystrcmp(char str1[40], char str2[40])
{
int d,i, len1=0, len2=0, flag=0;
/* Finding length of first string */
for(i=0; str1[i]!=' '; i++)
{
len1++;
}
/* Finding length of first string */
for(i=0; str2[i]!=' '; i++)
{
len2++;
}
if(len1!=len2)
{
return(1);
}
else
{
for(i=0;i< len1;i++)
{
if(str1[i]!=str2[i])
{
flag=1;
break;
}
}
if(flag==0)
{
return(0);
}
else
{
return(1);
}
}
}