#define ENDVALUE_2 10 { int year; float sales = 1000; //鍗曚綅涓囩編鍏? float profit = 100; float decrease_rate = 0.04; printf(" SALES AND PROFIT PROJECION \n"); printf(" ----------------------------- \n"); printf(" \n"); printf(" YEAR EXPECTED SALES PROJECTED PROFIT\n"); printf(" ---- -------------- ----------------\n"); year = 1; while(year <= ENDVALUE_2) { sales = sales - 1000 * (year - 1) * 0.04; profit =profit - 100 * (year - 1) * 0.04; printf("%4d\t%11.2f\t%13.2f\n", year, sales, profit); year = year + 1; } double total_sales; double total_profit; sales = 1000; profit = 100; for(year =1;year <= ENDVALUE_2;year ++) { sales = sales - 1000 * (year - 1) * 0.04; profit =profit - 100 * (year - 1) * 0.04; total_sales += sales; total_profit += profit; } printf("Totals:$%2f $%2f\n",total_sales,total_profit); }

这段代码有一些问题，主要是在定义变量ENDVALUE_2的时候出现了错误。

首先，定义常量应该使用#define关键字，但是在这里却使用了宏定义，导致代码的可读性和可维护性都很差。

其次，在宏定义中没有使用括号将常量和代码块区分开来，这也容易导致一些错误。

最后，变量total_sales和total_profit没有进行初始化，这可能会导致计算结果不准确。

以下是一个修正后的代码，你可以参考一下：

#define ENDVALUE_2 10
int main() {
    int year;
    float sales = 1000; //鍗曚綅涓囩編鍏?
    float profit = 100;
    float decrease_rate = 0.04;
    double total_sales = 0;
    double total_profit = 0;
    printf("       SALES  AND  PROFIT  PROJECION      \n");
    printf("       -----------------------------      \n");
    printf("                                          \n");
    printf(" YEAR    EXPECTED SALES   PROJECTED PROFIT\n");
    printf(" ----    --------------   ----------------\n");
    year = 1;
    while(year <= ENDVALUE_2)
    {
        sales = sales - 1000 * (year - 1) * 0.04;
        profit =profit - 100 * (year - 1) * 0.04;
        printf("%4d\t%11.2f\t%13.2f\n", year, sales, profit);
        year = year + 1;
    }
    sales = 1000;
    profit = 100;
    for(year =1;year <= ENDVALUE_2;year ++)
    {
        sales = sales - 1000 * (year - 1) * 0.04;
        profit =profit - 100 * (year - 1) * 0.04;
        total_sales += sales;
        total_profit += profit;
    }
    printf("Totals:$%.2f  $%.2f\n",total_sales,total_profit);
    return 0;
}