c++ - 错误 : expected primary-expression before ‘int’

Question

我正在使用:gcc --版本gcc (Ubuntu 4.9.2-0ubuntu1~14.04) 4.9.2

我正在尝试编译以下程序:

#include <iostream>
#include <cilk/cilk.h>

using namespace std;

int main(){

    cout << "\nStart\n";
    cilk_for (int i = 0; i < 10; i++) {
        cout << "I = " << i;
    }

}

但是得到如下错误:

g++ -fcilkplus Cilk_1.cpp 
Cilk_1.cpp: In function ‘int main()’:
Cilk_1.cpp:9:12: error: expected primary-expression before ‘int’
  cilk_for (int i = 0; i < 10; i++) {
            ^
Cilk_1.cpp:9:23: error: ‘i’ was not declared in this scope
  cilk_for (int i = 0; i < 10; i++) {
                       ^

怎么了？

谢谢

Answer 1

来自link Chris gave在评论中，GCC 4.9 似乎开箱即用地支持 cilk 扩展的所有功能 except _Cilk_for。因此，您的编译器 (GCC 4.9) 不支持 cilk_for。