排序

#include <stdio.h> #define  M   40 #define  N   11 int main() {              int  i, j, grade, feedback[M], count[N] = {0};     printf("Input the feedbacks of 40 students:\n");     for (i = 0; i < M; i++)     {                  scanf("%d", &feedback[i]);     }     for (i = 0; i < M; i++)     {                  switch (feedback[i])         {                  case 1:             count[1]++;             break;         case 2:             count[2]++;             break;         case 3:             count[3]++;             break;         case 4:             count[4]++;             break;         case 5:             count[5]++;             break;         case 6:             count[6]++;             break;         case 7:             count[7]++;             break;         case 8:             count[8]++;             break;         case 9:             count[9]++;             break;         case 10:             count[10]++;             break;         default:             printf("input error!\n");             break;         }     }     printf("Feedback\tCount\tHistogram\n");     for (grade = 1; grade <= N - 1; grade++)     {                  printf("%8d\t%5d\t", grade, count[grade]);         for (j = 0; j < count[grade]; j++)         {                      printf("%c", '*');         }         printf("\n");     }     return 0; }