Please help, can't read a .txt file

[karakatiza]

Hello:

My program outputs data into a .txt file in a following format:
1234
2345
3456
4567

I need to be able to read a particular number from the file (let's say number 4 in the second row) and assign that number to a variable. Help me out please, I have no idea how to make this work. Thanks a lot.

 

[Leibnitz]

you can use the function "fscanf" to do it,here is an example on how you could proceed:

#include <stdio.h>

void main()
{
	int number, lines = 1;
	FILE *fp = fopen(&quot;data.txt&quot;,&quot;r&quot;);
	if(!fp) 
	{ 
		perror(&quot;data.txt&quot;); 
		return; 
	}
	while( fscanf( fp, &quot;%d&quot;, &number ) != EOF )
	{
		if( lines == 4 ) break;
		lines++;
	}
	printf(&quot;number = %d\n&quot;,number);
	fclose(fp);
}