函数指针数组

第一次使用函数指针数组

#include<stdio.h>

void Monday_fun()
{
    printf("Monday");
}

void Tuesday_fun()
{
    printf("Tuesday");
}

void Wednesday_fun()
{
    printf("Wednesday");
}

void Thursday_fun()
{
    printf("Thursday");
}

void Friday_fun()
{
    printf("Friday");
}

void Saturday_fun()
{
    printf("Saturday");
}

void Sunday_fun()
{
    printf("Sunday");
}


int main()
{
    int day;
    printf("Please input the day of week:\n");
    scanf("%d",&day);
    /*
    switch (day)
    {
    case 1:
        Monday_fun();
        break;
    case 2:
        Tuesday_fun();
        break;
    case 3:
        Wednesday_fun();
        break;
    case 4:
        Thursday_fun();
        break;
    case 5:
        Friday_fun();
        break;
    case 6:
        Saturday_fun();
        break;
    case 7:
        Sunday_fun();
        break;
    default:
        break;
    }
    */
   void (*weekday[7])();
   weekday[0]=Monday_fun;
   weekday[1]=Tuesday_fun;
   weekday[2]=Wednesday_fun;
   weekday[3]=Thursday_fun;
   weekday[4]=Friday_fun;
   weekday[5]=Saturday_fun;
   weekday[6]=Sunday_fun;
   weekday[day-1]();  //必须要加()，不然只是指针，没有调用函数 
    return 0;
}