c语言阶梯电价计算编程

Question

Answer 1

#include <stdio.h>


int main()
{
    int du = 0;
    scanf("%d",&du);

    if(du <= 220)
        printf("应缴费:%0.2f\n",(float)du*0.49);
    else if(du > 220 && du <= 400 )
        printf("应缴费:%0.2f\n",(float)(du-220)*0.54+220*0.49);
    else 
        printf("应缴费:%0.2f\n",(float)(du-400)*0.79+220*0.49+180*0.54);


}

希望采纳