use of auto in range based for loops to iterate over string

Asked Jul 10 '17 at 14:47

Active Jul 10 '17 at 14:49

Viewed 497 times

consider following program

string hr = "hackerrank";
for(auto &c: hr){
        cout<<c;
}

this code runs perfectly fine on hackerrank but whenever I try to compile this program on my ubuntu 16.4.1 using g++ compiler, it shows following error,

error: ISO C++ forbids declaration of ‘c’ with no type [-fpermissive]
for(auto &c: hr){

why is it showing error on g++ compiler but not on HackerRank ?

PS: I tried going through all questions where this error is discussed. but I couldn't find an answer. If you find a similar question then let me know.

edited Jul 10 '17 at 14:49

asked Jul 10 '17 at 14:47

Ani

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What version of `g++` are you using? – Ben Steffan Jul 10 '17 at 14:48
1

What is the command line you're using to compile with `g++`? Are you sure you're specifying `c++11` or later? – lcs Jul 10 '17 at 14:48
I am using gcc 5.4.0. Command used to compile the program was `g++ filename.cpp` – Ani Jul 10 '17 at 14:49
2

Add -std=c++11 to your command – Jul 10 '17 at 14:50
@manni66 .. It worked ! – Ani Jul 10 '17 at 14:51

use of auto in range based for loops to iterate over string

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