CODEWITHSUNDEEP
cfilenewlineputs
Constantine
Constantine

Reputation: 783

C puts() without newline

I currently have this program that prints a text file on the console, but every line has an extra new line below it. if the text was

hello world

it would output hello

world

the code is this 

#include <iostream>
#include <stdio.h>
#include <string.h>
using namespace std;
int _tmain(int argc, _TCHAR* argv[])
{
    FILE* fp;
    char input[80], ch = 'a';
    char key[] = "exit\n";
    int q;

    fp = fopen("c:\\users\\kostas\\desktop\\original.txt", "r+");

    while (!feof(fp)) {
        fgets(input, 80, fp);
        puts(input);
    }
    fclose(fp);

    return 0;
}

Upvotes: 45

Views: 45318

Answers (4)

markoj
markoj

Reputation: 148

This should work:

#include<stdio.h>
void put_s(char* s){
    while(*s) putchar(*s++);
}

Just for the sakes of having more examples, here is another one involving recursion:

#include<stdio.h>
void put_s(char* s){
    if(!*s) return;
    putchar(*s);
    put_s(s+1);
}

Note: I noticed that your code wouldn't compile, because of the #include<iostream> and the using namespace std;.

Upvotes: 0

Ferrarezi
Ferrarezi

Reputation: 840

You can also write a custom puts function:

#include <stdio.h>

int my_puts(char const s[static 1]) {
    for (size_t i = 0; s[i]; ++i)
        if (putchar(s[i]) == EOF) return EOF;

    return 0;
}

int main() {
    my_puts("testing ");
    my_puts("C puts() without ");
    my_puts("newline");

    return 0;
}

Output:

testing C puts() without newline

Upvotes: 5

Alex North-Keys
Alex North-Keys

Reputation: 4363

Typically one would use fputs() instead of puts() to omit the newline. In your code, the

puts(input);

would become:

fputs(input, stdout);

Upvotes: 95

Sergey Kalinichenko
Sergey Kalinichenko

Reputation: 726509

puts() adds the newline character by the library specification. You can use printf instead, where you can control what gets printed with a format string:

printf("%s", input);

Upvotes: 16

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