#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#define A 365

int main(void)
{
    char string[A];
    char *pS[A]={NULL};
    int i=0;
    int days=0;
    int j=0;
    double n=0.0;

    printf("请写出你要输入的天数：");
    scanf("%d",&days);
    for(i=0;i<days;i++)
    {
        printf("请输入第%d天的温度记录:\n",i+1);
         fgets(string,A,stdin);
            string[strlen(string)-1]='\0';
        while(j<6)
        {
            pS[j]=(char*)malloc(strlen(string)+1);
            if(pS[j]==NULL)
            {
                printf("内存失败，程序终止\n");
                return 1;
            }
            strcpy(pS[j++],string);
        }
    }
        j=0;
        for(i=0;i<days;i++)
        {
        printf("    第%d天\n",i+1);
        while(j<6*(i+1))
        {
            if((j+1)%3==0)
                printf("\n");
        printf("%4s",pS[j++]);
        }
        }
        printf("\n\n");
        j=0;
        for(i=0;i<days;i++)
        {
            n=0;
            for(;j<6*(i+1);j++)
            {
            n+=atof(pS[j]);
            free(pS[j]);
            pS[j]=NULL;
            }
        printf("\n第%d天的平均温度为%0.1f\n",i+1,n/(double)6);
        }
    return 0;
}

希望能加以修改并解释其意义，非常感谢

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#define A 365

int main(void)
{
    char string[A];
    char *pS[A]={NULL};
    int i=0;
    int days=0;
    int j=0;
    double n=0.0;

    printf("请写出你要输入的天数：");
    scanf(" %d",&days);
    getchar();
    for(i=0;i<days;i++)
    {
        printf("请输入%d天温度记录:\n",i+1);
        while(j<6*(i+1))
        {
             fgets(string,A,stdin);
            string[strlen(string)-1]='\0';
            pS[j]=(char*)malloc(strlen(string)+1);
            if(pS[j]==NULL)
            {
                printf("内存失败，程序终止\n");
                return 1;
            }
            strcpy(pS[j++],string);
        }
    }
        j=0;
        for(i=0;i<days;i++)
        {
        printf("The %d day%c:\n",i+1,i==0?' ':'s');
        while(j<6*(i+1))
        {
        printf("%4s",pS[j++]);
        if(j%3==0)
                printf("\n");
        }
        }
        printf("\n\n");
        j=0;
        for(i=0;i<days;i++)
        {
            for(;j<6*(i+1);j++)
            {
            n+=atof(pS[j]);
            free(pS[j]);
            pS[j]=NULL;
            }
            printf("第%d天的平均温度为%0.1f\n",i+1,n/(double)6);
            n=0;        
        }
            return 0;
}


我已经懂了，也通过百度了解到了scanf的输出与getchar（）函数的一些用法，
这个程序我改了一下，可以运行了，但是显得有些笨拙，
如果有时间的话希望能给了比较简洁的实例，谢谢