题目

aaarticlea/png;base64,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" alt="" />

解决代码及点评


/*
1. 将10个整数写入数据文件f3.dat中,
再读出f3.dat中的数据并求其和。
*/
#include <stdio.h>
#include <stdlib.h>
const int N = 10;
void writeFile()
{ int a[N];
//随机产生10个数,存入数组a[N]
for (int i = 0;i < N; i++)
{
a[i] = rand() % 100;
}
FILE *fp = NULL;
fopen_s(&fp, "f3.dat","w");
if (fp)
{ for (int i = 0;i < N; i++)
{
fprintf(fp,"a[%d]=%d ",i,a[i]);
}
fclose(fp);
}
else
{
printf("open file failed!");
//exit(0);
}
}
int readFile()
{
int a[N];
FILE *fp = NULL;
int sum = 0;
fopen_s(&fp, "f3.dat","r");
if (fp)
{ for (int i = 0;i < N; i++)
{
if (!feof(fp))
{
fscanf_s(fp,"a[%d]=%d ",&i,&a[i]);
sum += a[i];
}
}
fclose(fp);
}
else
{
printf("open file failed!");
}
return sum;
}
void main()
{
writeFile();
int sum = readFile();
printf("sum = %d\n",sum);
system("pause");
}

代码编译以及运行

由于资源上传太多,资源频道经常被锁定无法上传资源,同学们可以打开VS2013自己创建工程,步骤如下:

1)新建工程

2)选择工程

3)创建完工程如下图:

4)增加文件,右键点击项目

5)在弹出菜单里做以下选择

6)添加文件

7)拷贝代码与运行

程序运行结果

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" alt="" />



代码下载

http://download.csdn.net/detail/yincheng01/6694119

解压密码:c.itcast.cn



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