C语言及程序设计提高例程-39 动态存储管理与动态数组的实现

#include <stdio.h>
#include <stdlib.h>
int main( ){
    int *p1,*p2, max;
    p1 = (int *) malloc(sizeof(int));
    p2 = (int *) malloc(sizeof(int));
    *p1 = 100;
    *p2 = 10;
    if(*p1>*p2)
        max = *p1;
    else
        max = *p2;
    printf("max=%d\n", max);
    free(p1);
    free(p2);
    return 0;
}

#include <stdio.h>
#include <malloc.h>
int main()
{
    int *score;
    int num,i, total=0;
    float aver;
    printf("小组共有多少名同学?");
    scanf("%d", &num);
    score = (int*)malloc(num*sizeof(int));
    printf("请输入学生成绩：\n");
    for(i=0; i<num; i++)
    {
        scanf("%d", score+i);
        total+=*(score+i);  //或score[i]
    }
    aver=1.0*total/num;
    printf("平均成绩：%5.2f", aver);
    free(score);
    return 0;
}