al4_7.c

the examples of c codes.it is very easy,but the basic is important

/*案例代码文件名：AL4_7.C。*/
/*功能：已知利润求薪水。*/
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);
}