My program don't read all lines of a text file

**Netcode** · 04-13-2012

I don't know why my program is reading only first line. The text.file has 2 lines actually.

The first line is printing.

But the second line is not printing

The output is always:

The first line is printing.

Here is my program:

Code:

#include<stdio.h>
int main(){


    FILE *in=fopen("satu.txt","rt");
    char hello[100];
    
    fgets(hello,60,in); /*what is the use of in? Why writing in this format?*/
    
    printf("first line of \"text.txt\": %s", hello); 
    
    fclose(in); /*closing file*/


    return 0;




}

I am now learning how to read from a file. But here I don't know what is the use of in . I found this in a tutorial. If I delete it, the program doesn't work.

**camel-man** · 04-13-2012

well to start, "in" is the name of the FILE pointer, so without it there will be syntax errors. Also, are you sure you mean "rt" for the mode or do you mean "r+"?

**Netcode** · 04-13-2012

Originally Posted by camel-man

well to start, "in" is the name of the FILE pointer, so without it there will be syntax errors. Also, are you sure you mean "rt" for the mode or do you mean "r+"?

I am not sure. I saw that wt is used for writing in a new file. So, might be rt is used for reading. What is the use of r++?

**camel-man** · 04-13-2012

r - open for reading
w - open for writing (file need not exist)
a - open for appending (file need not exist)
r+ - open for reading and writing, start at beginning
w+ - open for reading and writing (overwrite file)
a+ - open for reading and writing (append if file exists)

**Netcode** · 04-13-2012

Originally Posted by camel-man

r - open for reading
w - open for writing (file need not exist)
a - open for appending (file need not exist)
r+ - open for reading and writing, start at beginning
w+ - open for reading and writing (overwrite file)
a+ - open for reading and writing (append if file exists)

Thank you. I changed rt to r+. But still the program is reading only the first line.

**mariostg** · 04-13-2012

fgets stops reading after new line or EOF, which ever comes first. If you want to read more than one line, you have to use a loop.

Thread: My program don't read all lines of a text file

Thread Tools

Search Thread

Display

My program don't read all lines of a text file

Similar Threads

Function to read lines of text

Read text file line by line and write lines to other files

Best way to read lines out of a text file

read a text file with lines of variable length

can't read from simple text file to a struct. (entire program posted)