小白求解c++程序

[qq_31205301]

这个是题 请问我写的的对吗 还有没有其他做法

写一个程序仅使用指针加载一组15个整数的随机数组
数从3至57（二）加倍其内容，（三）打印所述数组的每行10个值使用该内容
指针运算。
Write a program that using only pointers (a) loads an array of 15 integers with random number from 3 to 57 (b) doubles its contents, (c) prints the contents of the array 10 values per line using pointer arithmetic.
#include<iostream>
#include<stdlib.h>
#include<ctime>

using namespace std;
int main()
{
srand(time(NULL));
int array[15];
int *point;
point=&array[0]

int count =0

for( int i=0;i<15;i++)

{
array [i] =3+rand()%55;
cout<<*(point+i)*2<<" ";
cout ++;
if(count%10==0)

cout<<endl;
}
return 0;
}

[heroesjun]

count++吧。

[qq_31205301]

这个不会写阿
Create a text file with 10 records of the form: Model, string (10 characters), Cost (double), plate (6 characters) and customer ID (integer). Use a structure to record the data into the file. Your program will create this file, close it and then reopen to print the first and the last fields of these 10 records.

[赵4老师]

//Create a text file with 10 records of the form:
//Model, string (10 characters),
//Cost (double),
//plate (6 characters) and
//customer ID (integer).
//Use a structure to record the data into the file.
//Your program will create this file,
//close it and then reopen to print the first and the last fields of these 10 records.
#include <stdio.h>
struct form {
    char   Model     [11];
    double Cost          ;
    char   plate     [ 7];
    int    customerID    ;
} rs[10],fs[10]={
    {"Modle0",0.0,"plate0",0},
    {"Modle1",1.0,"plate1",1},
    {"Modle2",2.0,"plate2",2},
    {"Modle3",3.0,"plate3",3},
    {"Modle4",4.0,"plate4",4},
    {"Modle5",5.0,"plate5",5},
    {"Modle6",6.0,"plate6",6},
    {"Modle7",7.0,"plate7",7},
    {"Modle8",8.0,"plate8",8},
    {"Modle9",9.0,"plate9",9},
};
FILE *f;
int i;
int main() {
    f=fopen("forms.txt","w");
    for (i=0;i<10;i++) {
        fprintf(f,"%s\n" ,fs[i].Model     );
        fprintf(f,"%lg\n",fs[i].Cost      );
        fprintf(f,"%s\n" ,fs[i].plate     );
        fprintf(f,"%d\n" ,fs[i].customerID);
    }
    fclose(f);
    f=fopen("forms.txt","r");
    for (i=0;i<10;i++) {
        fscanf(f,"%10s", rs[i].Model     );
        fscanf(f,"%lf" ,&rs[i].Cost      );
        fscanf(f,"%6s" , rs[i].plate     );
        fscanf(f,"%d"  ,&rs[i].customerID);
    }
    fclose(f);
    i=0;
    printf("rs[%d].Model     :%s\n" ,i,rs[i].Model     );
    printf("rs[%d].Cost      :%lg\n",i,rs[i].Cost      );
    printf("rs[%d].plate     :%s\n" ,i,rs[i].plate     );
    printf("rs[%d].customerID:%d\n" ,i,rs[i].customerID);
    i=9;
    printf("rs[%d].Model     :%s\n" ,i,rs[i].Model     );
    printf("rs[%d].Cost      :%lg\n",i,rs[i].Cost      );
    printf("rs[%d].plate     :%s\n" ,i,rs[i].plate     );
    printf("rs[%d].customerID:%d\n" ,i,rs[i].customerID);
    return 0;
}
//rs[0].Model     :Modle0
//rs[0].Cost      :0
//rs[0].plate     :plate0
//rs[0].customerID:0
//rs[9].Model     :Modle9
//rs[9].Cost      :9
//rs[9].plate     :plate9
//rs[9].customerID:9
//