从文件输入和输出

Input and output from file

本文关键字:输出 输入 文件      更新时间:2023-10-16

我是编码新手。我得到了这个我几乎完成的任务,但坚持在最后一步。我的老师给了我们正整数文件。任务是查找每行的总计和一行的输出总计以及文件中所有数字的总计。我得到的行总数工作正常,但是当我尝试对所有数字进行总计时,我得到了错误的答案。

请查看我的代码并告诉我我做错了什么。

代码如下:

#include <iostream>
#include <string>
#include <fstream>
#include<iomanip>
using namespace std;
int main()
{
ifstream infile; ofstream outfile;
int counter, counter2, line, sum, num;
double total;
infile.open("E:\Lab assignments\numberfile.txt");
if (!infile)
{
cout << "File not found, closing program" << endl;
system("pause");
exit(1);
}
outfile.open("E:\Lab assignments\outfile.txt");
if (!outfile)
{
cout << "Output file could not be created, closing program" << endl;
system("pause");
exit(1);
}

while (!infile.eof())
for (counter = 1; counter <= 8; counter++)
{
sum = 0;
if (counter != 9)
{
for (line = 1; line < 8; line++)
{
infile >> num;
outfile << right;
outfile << setw(6);
outfile << num << " ";
sum = sum + num;
outfile << " ";

}
outfile << "Total per line = " << sum;
outfile << endl;

}


}
total = 0;
for (counter2 = 0; counter2 <= 8; counter2++)
{
{
infile >> sum;
total = total + sum;
}
}
outfile << "All numbers total= " << total;
infile.close();
outfile.close();
return 0;

}

和带有数字的文件:

346 130 982 90 656 117 595 415 948 126 4 558 571 87 42 360 412 721 463 47 119 441 190 985 214 509 2 571 77 81 681 651 995 93 74 310 9 995 561 92 14 288 466 664 892 8 766 34 639 151 64 98 813 67 834 369

计算同一循环中每一行的总和和将大大简化您的任务,并将消除代码中隐藏的问题。简单:)