ch5_7.c

C语言程序设计 冶金工业出版社 刘怀亮

/*ch5_7*/
#include<stdio.h>	
main()
{
    long  profit;
    int  grade;
    float  salary=500;
    printf("Input  profit: ");
    scanf("%ld", &profit);
    grade= (profit - 1) / 1000;	
    /*将利润-1、再整除1000，转化成switch语句中的case标号*/
    switch(grade)
    { 
        case  0:  break;				    		/*profit≤1000 */
        case  1: salary += profit*0.1; break;		/*1000＜profit≤2000 */
        case  2: 
        case  3: 
        case  4: salary += profit*0.15; break;	/*2000＜profit≤5000 */
        case  5: 
        case  6: 
        case  7: 
        case  8: 
        case  9: salary += profit*0.2; break;		/*5000＜profit≤10000 */
        default: salary += profit*0.25;			/*10000＜profit */
    }
    printf("salary=%.2f\n", salary);
}