c语言学习之统计字符个数

#include <stdio.h>#include <stdlib.h>void c2();int main(int argc, char *argv[]){    c2();  system("PAUSE");  return 0;}void c2(){     //输入一串字符     char c;     //定义数组     int i;     i = 0;     int count[4] = {};      while(1){              scanf("%c",&c);              if('.' == c){                     break;              }              if(c>='a' && c<='z'){                     count[0]++;           } else if(c>='A' && c<='Z'){                  count[1]++;           }else if(c>='0' && c<='9'){                  count[2]++;           }else{                  count[3]++;           }     }                        printf("小写字母个数：%d",count[0]);                     printf("大写字母个数：%d",count[1]);                     printf("数字个数：%d",count[2]);                     printf("其他：%d",count[3]);}