String Comparison

[madhankrish]

hello all,
i'm writing code in c.
can someone help me out with this problem?
i have to read the first line of a text file into string1.
the second line has to be read into string2.
then strings 1 and 2 have to be compared character by character..
and the number of differences between the 2 strings has to be printed.
can someone give me the code?
thanks

madhan

[prakash ravindran]

hii


This may help u out...

int main(void)
{
char *str1="hi";
char *str2="happy";

int str1len ;
int str2len ;
int i ;
int count =0 ;

str1len = strlen(str1);
str2len = strlen(str2);


for(i=0;i<((str 1len>str2len)?s tr1len:str2len) ;i++)
{
if(*str1!=*str2 )
count++;
str1++;
str2++;

}
printf("%d",cou nt) ;
return ;
}
note :
read the string str1 and str2 from the file....

[madhankrish]

thankyou prakash.
its working fine.
but in my case, i have to read the first line of a file as str1 and the second line of the same file as str2.
that is exactly what i wanted to know.
hope u could help me out.
thanks again.

madhan

[prakash ravindran]

madhan,

It is not big work to call a file and read the first line and 2nd line alone

use fgets() function to read the data from the file.

FILE *file;
file = fopen("test.txt ", "r");

if(file==NULL)
{
printf("Error: can't open file.\n");
return 1;
}
else
{
fgets(str1,line len, file);
fgets(str2,line len, file);
}
fclose(file);

try this it must work....


regards

Prakash R.

[madhankrish]

Thankyou so much Prakash.
You seem to help me out everytime :-)

Regards,
Madhan