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c++stringgccg++geany
Nived.R.S
Nived.R.S

Reputation: 21

why g++ shows "gets()" not declared ,even after including <cstdio>

#include <cstdio>
#include <cstring>
#include <iostream>

using namespace std;

int main()
{
    char str[30];
    gets(str);
}

when i use gets () function compiler gives me the following error

error: 'gets' was not declared in this scope

i was using G++ with geany ide

please make the solution simple cuz iam a beginner.

Upvotes: 0

Views: 2363

Answers (3)

Tanzim Ahmed
Tanzim Ahmed

Reputation: 1

You can use scanf() to input string.

#include <cstdio>
#include <cstring>
#include <iostream>

using namespace std;

int main()
{
    char str[30];
    scanf("%s", str);
}

Upvotes: 0

NathanOliver
NathanOliver

Reputation: 180710

gets was deprecated in C++11 and removed from C++14. If you are using GCC6.0 or newer then by default it uses C++14 and won't be available. Instead of using

main()
{
    char str[30];
    gets(str);
}

use

int main()
{
    std::string str;
    std::getline(cin, str);
}

Upvotes: 6

Vlad from Moscow
Vlad from Moscow

Reputation: 311038

gets is an unsafe function and is not supported by the C Standard any more.

Instead use fgets.

For example

#include <iostream>
#include <cstdio>
#include <cstring>

int main()
{
    char str[30];

    std::fgets(str, sizeof( str ), stdin );

    str[ std::strcspn( str, "\n" ) ] = '\0';

    //...
}

Upvotes: 3

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