Thread: Read first line of a file and store in a variable

Dear friends,

I have a file named "in.txt" with following data:

10
20
30
40


and now I want to store the first line of this file which is "10" in a variable of type integer. would you please help with this? so that after running the program lets say variable "nFirst" equals to "10".

Regrads.

Which part of the problem is the problem? Do you know how to do input in general? Do you know how to open a file? What?

Please google around and read up on fgets() and fopen(). This may point you in the right direction to learn how to open up a file and get its contents.

u can wrote it like this
tag
#include<stdio.h>
main()
{
FILE *o;
o=fopen("in.txt","r");
if((o=fopen("in.txt","r"))!=NULL)
{
int x;
fscanf(o,"%d",&x);
printf("nfirst = %d",x);
fclose(o);
}
}
tag

@mustafa:

It's better to give them a hint, and let them work at it for awhile. If our plumbers can't work with toilets, I don't want them to be plumbers.

Instead of tag, try:

[code1]

Code:

Your code in here

[/code1]

Just leave off the 1, to make it work.