C/C++之switch范围判断

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1 switch范围判断用法,使用’…’符

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#include <iostream>

int main(int argc, char *argv[])
{
    int i = 5;
    switch (i) {
        case 0 ... 3:
            std::cout<<"0-3: "<<i<<std::endl;
            break;
        case 4 ... 6:
            std::cout<<"4-6: "<<i<<std::endl;
            break;
        case 7 ... 9:
            std::cout<<"7-9: "<<i<<std::endl;
            break;
        case 10:
            std::cout<<"10"<<i<<std::endl;
        default:
            break;
    }
    return 0;
}

2 输出

4-6: 5