"Go" gcc/g++ how to support C11/C++11 standard compilation

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/*    file : main.cpp*/#include <stdio.h>intmain() {    inta[5] = { 1, 2, 2, 5, 1 };    for( int i:a ) {        printf( "%d\n", a[i] );    }    return0;}

Then g++ will prompt the following error:

123	main.cpp: In function ‘intmain()’:main.cpp:5:13: error: range-based ‘for’ loops are not allowed in C++98 mode  for( inti:a ) {

This means that the loop is not supported in c++98, because this is the c++11 new loop method.

So what if you have to compile it?

The following methods can be learned by ordering man g++:

g++-g-wall-std=c++11 main.cpp

In addition to g++, GCC can support C11 in a similar way

Gcc-g-wall-std=c11 main.cpp

What should I do if I don't want to write this-std=c++11 this option every time?

Method Source: HTTP://STACKOVERFLOW.COM/QUESTIONS/16886591/HOW-DO-I-ENABLE-C11-IN-GCC

Method 1: Write Makefile

Method 2: Alias: Alias g++11= "g++-std=c++11"

"Go" gcc/g++ how to support C11/C++11 standard compilation