Why i cant add "\n" in c++ cout statement . and what is

Question

On the last line in the code below, the compiler give me an error on the "\n":

ERROR expected ';' before string constant

#include <iostream>
using namespace std;

int main()
{
    int num1;
    double num2;
    cout << "enter the inetger: \n";
    cin>>num1;
    cout<<"enter the float: \n";
    cin>>num2;
    cout<<"integer:""\t"<<num1<<" and float:""\t"<<num2"\n";
    return 0;
}

Here is an Image:

You just forgot the `<<` between `num2` and `"\n"`. This question is probably just a typo. — François Andrieux, Oct 20 '20 at 19:42

score 1 · Accepted Answer · answered Oct 20 '20 at 19:41

1

you have to use << to concatenate like

cout<<"integer:""\t"<<num1<<" and float:""\t"<<num2<<"\n";

or better use

cout<<"integer:""\t"<<num1<<" and float:""\t"<<num2<<endl;

answered Oct 20 '20 at 19:41

Andrew Nic

108
1
11

6

endl is not necessarily better as it force flush the stream. – Rosme Oct 20 '20 at 19:42
not so obvious where you did add the `<<`, btw you didnt have to put one in between here: `"integer:""\t"` – 463035818_is_not_an_ai Oct 20 '20 at 19:43
yes right, also the "" inside causes error – Andrew Nic Oct 20 '20 at 19:45
@idclev463035818 The compiler concatenates string literals separated by whitespace (even CR/LF), so "a" "bc" "def" becomes "abcdef". – franji1 Oct 20 '20 at 19:45
ok now i understand . but what is force flush stream . – inoobbe Oct 20 '20 at 19:49
1

@franji1 I know, but thats not my point. OP probably doesn't. And I suppose if I didnt know then this question would confuse me – 463035818_is_not_an_ai Oct 20 '20 at 19:51
@idclev463035818 sry for the inconvenience . i am actually start learning C++ . so i don't know about those things . btw thank you for the help . – inoobbe Oct 20 '20 at 19:57
@inoobbe "*i am actually start learning C++ . so i don't know about those things*" - then get yourself a [good C++ book](https://stackoverflow.com/questions/388242/the-definitive-c-book-guide-and-list) that covers these things. – Remy Lebeau Oct 20 '20 at 21:04

Why i cant add "\n" in c++ cout statement . and what is

1 Answers1