成績系統v2

grade_v2.c

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

int main()
{
    //print my title
    printf("*************************************************");
    printf("\t\t\t\t*");
    printf("\t\t成績計算系統<v2>");
    printf("\t\t*\n");
    printf("*************************************************\n\n");

    int number = 0;
    printf("學生數: ");
    scanf("%d", &number);
    int arr[number];
    int counter = 0;
    int temp = 0;
    printf("\n請分別輸入%d位同學的成績\n\n", number);
    for(;counter<number;counter++)
    {
        printf("同學%d成績為: ", (counter + 1));
        scanf("%d", &temp);
        arr[counter] = temp;
    }

    //get max number
    counter = 0;
    int max = 0;
    int min = 0;
    int sum = 0;
    float average = 0.0;
    for(;counter<number;counter++)
    {
        max = get_max(arr[counter], max);
    }

    counter = 0;
    min = arr[0];
    //get min number
    for(;counter<number;counter++)
    {
        min = get_min(arr[counter], min);
    }

    counter = 0;
    //get average number
    for(;counter<number;counter++)
    {
        sum += arr[counter];
    }

    average = (float)sum / (float)number;

    //get range
    int q_range[4] = {0,0,0,0};
    counter = 0;
    for(;counter<number;counter++)
    {
        if(arr[counter]>=76 && arr[counter]<=100)
            q_range[0] += 1;
        else if(arr[counter]>=51 && arr[counter]<=75)
            q_range[1] += 1;
        else if(arr[counter]>=26 && arr[counter]<=50)
            q_range[2] += 1;
        else
            q_range[3] += 1;
    }

    //print result
    printf("\n");
    printf("A.Q1: %d人, Q2: %d人, Q3: %d人, Q4: %d人\n",q_range[0],q_range[1],q_range[2],q_range[3]);
    printf("B.最高分: %d\n", max);
    printf("C.最低分: %d\n", min);
    printf("D.平均成績: %.1f", average);
    printf("\n\n");
    printf("P.S.: Q1: 76-100分, Q2: 51-75分, Q3: 26-50分, Q4: 0-25分");
    return 0;
}

int get_max(int num, int num2)
{
    if(num> num2)
        return num;

    else if(num2 > num)
        return num2;
    else
        return num;
}

int get_min(int num, int num2)
{
    if(num < num2)
        return num;
    else if(num2 < num)
        return num2;
    else
        return num;
}