#include <stdio.h>int main(){char a; int i = 0;int number = 0; //数字个数int space = 0; //空格个数int letters = 0; //字母个数int other = 0; //其他个数while((a=getchar())&&a!='\n'){if(a >= '0' && a <= '9'){number++;}else if(a == ' '){space ++;}else if((a >= 'a' && a <= 'z') || (a >= 'A' && a <= 'Z')){letters ++;}else{other++;}}printf("英文字母个数为:%d\n", letters );printf("数字个数为:%d\n", number);printf("空格个数为:%d\n", space );printf("其他个数为:%d\n", other);return 0;}
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