c语言代码解决问题

解题思路:

注意事项:

参考代码:

#include<stdio.h>

#include<string.h>

int main()

{

    char str[201];

    gets(str);

    str[strlen(str)] = '\0';

    int i,len=strlen(str),sum_1=0,sum_2=0,sum_3=0,sum_4=0;

    for (i = 0; i < len; i++)

    {

        if (str[i] >= 'a' && str[i] <= 'z' || str[i] >= 'A' && str[i] <= 'Z')

            sum_1++;

        else if (str[i] >= '0' && str[i] <= '9')

            sum_2++;

        else if (str[i] == ' ')

            sum_3++;

        else

            sum_4++;

    }

    printf("%d %d %d %d", sum_1, sum_2, sum_3, sum_4);

    return 0;

}