[编程入门]字符串分类统计

解题思路:

注意事项:

参考代码:

    #include <stdio.h>

    #include <string.h>

    /*

    输入一行字符，分别统计出其中英文字母、数字、空格和其他字符的个数。

    */

    int main(){

             char s[200];

             int c=0,n=0,o=0,sp=0;;

             gets(s);

             for(int i=0;i<(int)strlen(s);i++){

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

                     {

                             c++;

                     }

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

                     {

                             n++;

                     }

                     else if(s[i]==' ')

                     {

                              sp++;

                     }

                     else

                     {

                            o++;

                     }

             }

             printf("%d %d %d %d",c,n,sp,o);

             return 0;

    }