声明结构，以避免混合声明和代码

Question

我与-Wdeclaration-after-statement编译，我得到以下警告：

ISO C90 forbids mixed declarations and code

这是因为我需要填充阵列之前执行某些操作。

我不知道什么是一种好的方法或替代方案来初始化和声明cars，所以这个警告可以避免。

有问题的代码看起来是这样的：

int my_func() { 
    typedef struct Car_ { 
     char *brand; 
     int amount; 
     int color; 
    } Car; 

    int fixed = 0; 
    int total1 = getAmountBase(brand1); 
    int total2 = getAmountSub(brand2); 
    int total3 = getAmountBase(brand3); 
    int total4 = getAmountSub(brand4); 
    int grand = getAmountBase(brand7); 
    // more operations... 
    if (grand7 != NULL) { 
     grand7 = calcBase(grand7, total6); 
     fixed = addGrand(grand7); 
    } 

    Car cars[] = {    // warning here. 
     {"brand1", total1, RED}, 
     {"brand2", total2, RED}, 
     {"brand3", total3, RED}, 
     {"brand4", total4, RED}, 
     {"brand7", fixed, RED}, 
    }; 

    // ... 
} 

Answer 1

声明它前面和后面分配计算部分：

Car cars[] = { 
    {"brand1", -1, RED}, 
    {"brand2", -1, RED}, 
    {"brand3", -1, RED}, 
    {"brand4", -1, RED}, 
    {"brand7", -1, RED}, 
}; 

... 

cars[0].amount = total1; 
cars[1].amount = total2; 
/* etc */ 

或者，如果合适，编译-std=c99。