C++ on uBuntu : fatal error:library iostream.h not found

madhuri thalluri

@madhuri-thalluri-1xTqQR • Oct 26, 2024

Oct 26, 2024

2.2K

hi...when i write a simple hello c++ program and executed in ubuntu13.0 its showing fatal error:library iostream.h not found like dat..wen i tried to install g++compiler using apt get command its showing something like these packages are not existed..now what should i do???i want to execute c++ programs???can anyone tell what is the problem nd what i should do for it??

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Abhishek Rawal

@abhishek-fg9tRh • Apr 26, 2014

That's because GNU GCC-C++ (aka g++) doesn't accept "iostream.h" syntax.
Just use <iostream>

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madhuri thalluri

@madhuri-thalluri-1xTqQR • Apr 26, 2014

Abhishek RawalThat's because GNU GCC-C++ (aka g++) doesn't accept "iostream.h" syntax.
Just use <iostream>
sryy abhishek...i tried it..but its showing error that "cout is not in the scope of int main()"...

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Abhishek Rawal

@abhishek-fg9tRh • Apr 27, 2014
madhuri thallurisryy abhishek...i tried it..but its showing error that "cout is not in the scope of int main()"...
add this line
```
using namespace std;
```
below [HASHTAG]#include[/HASHTAG] <iostream>

It should look something like
```
#include <iostream>
using namespace std;

int main()
{
cout << "CrazyEngineers";
}
```
If this too fails, then you might've made some mistake in installing compiler.
Re-installing libstdc++-dev and g++-multilib can fix it.

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