c++ - 为什么我的语法正确时我的代码输出为 0

Question

我认为问题在嵌套 if 之前开始，因为在代码末尾它应该输出 sales = price * sold 的结果，但它也输出 0

#include<stdio.h>
main() {
    int num, price, sold, sales;
    float compercent, commision;
    printf("Enter Unit Price: ");
    scanf("%d", &price);
    printf("Enter Quantity Sold: ");
    scanf("%d", &sold);
    sales = price * sold;

    if (sales >= 50000) {
        compercent = 0.1;
    }
    else if (sales >= 40000 && sales < 50000) {
        compercent = 0.08;
    }
    else if (sales >= 30000 && sales < 40000) {
        compercent = 0.06;
    }
    else if (sales >= 20000 && sales < 30000) {
        compercent = 0.04;
    }
    else if (sales >= 10000 && sales < 20000) {
        compercent = 0.02;
    }
    else if (sales >= 5000 && sales < 10000) {
        compercent = 0.01;
    }
    else if(sales<5000){
        compercent = 0;
    }
    commision = sales * compercent;
    printf("Sales: ");
    printf("sales = %f", &sales);
    printf("Commision: ");
    printf("%f", &commision);
}

Answer 1

当您使用 prinf 时，您不需要提供变量作为引用。该函数需要一个整数或 float ，而不是一个指针。

这应该可以解决:

printf("sales = %i\n", sales);
printf("Commision: ");
printf("%f", commision);