Question

c语言，求大神指教

第二题第三题怎么做，求大神指教

Answer 1

#include <stdio.h>
#include <stdlib.h>

int main()
{
    int i;
    int count;
    char c;
    char path[100];
    char words[63]={'0','1','2','3','4','5','6','7','8','9','A','B','C','D','E','F','G','H',
                    'I','J','K','L','M','N','O','P','Q','R','S','T','U','V','W','X','Y','Z',
                    'a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r',
                    's','t','u','v','w','x','y','z',' '};
    printf("请输入文件名：");//要带路径
    scanf("%s",&path);
    FILE * fb = NULL;


    for(i = 0;i < 63; i++)
    {
        fb = fopen(path,"r");
        if(NULL == fb)
        return -1;
        count = 0;
        while(fscanf(fb,"%c",&c)!=EOF)
        {
            if(c == words[i])
            {
                count++;
            }
        }
        printf("字符%c出现次数为：%d\n",words[i],count);
        fclose(path);
    }

    return 0;
}

Answer 2

挺简单的 不懂可以问我