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binary file in c++

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S.Y answered on June 26, 2022 Popularity 9/10 Helpfulness 4/10

answer binary file in c++

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binary file in c++

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				//reading from a binary file
	int r;
	fstream readBinaryFile;
	readBinaryFile.open("Binary file.dat", ios::in | ios::binary);
	if (readBinaryFile.is_open()) {
		readBinaryFile.read((char*)&r, sizeof(r));
		cout << r;
		readBinaryFile.close();
	}
	else cout << "Unable to open file!";

Popularity 9/10 Helpfulness 4/10 Language cpp

Source: Grepper

Tags: binary c++ file

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Contributed on Jun 26 2022

S.Y

0 Answers Avg Quality 2/10

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c++ writing to a binary file

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#include <fstream>

int main() {
    // Open the file for writing in binary mode
    std::ofstream outfile("YourFilename.__", std::ios::binary);

    // Write an integer to the file
    int num = 42;
    outfile.write((char*)(&num), sizeof(num));

    // Write a floating-point number to the file
    double val = 3.14159;
    outfile.write((char*)(&val), sizeof(val));

    // Close the file
    outfile.close();

    return 0;
}

Popularity 8/10 Helpfulness 5/10 Language cpp

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Tags: binary bi

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Contributed on Apr 11 2023

Siggi Valur

0 Answers Avg Quality 2/10

read string from binary file in c++

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fstream readStringBF;
	readStringBF.open("Name.dat", ios::in | ios::binary);
	char n[30];
	if (readStringBF.is_open()) {
		readStringBF.read(n, 30);
		n[readStringBF.gcount()] = NULL;		//append string terminator
		cout << n;
		readStringBF.close();
	}
	else cout << "Unable to open file!";

Popularity 9/10 Helpfulness 5/10 Language cpp

Source: Grepper

Tags: binary bi

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Contributed on Jun 26 2022

S.Y

0 Answers Avg Quality 2/10

binary file in c++

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    //writing into a binary file
		            //int
	fstream bFile("Binary file.dat", ios::out | ios::binary);
	int x = 65;
	if (bFile.is_open()) {
		bFile.write((char*)&x, sizeof(x));
		bFile.close();
	}
	else cout << "Failed opening the file";

			       	//string
fstream binaryName;
	string s = "J.L";
	binaryName.open("Name.dat", ios::out | ios::binary);
	if (binaryName.is_open()) {
		binaryName.write(s.c_str(), s.size());
		binaryName.close();
	}
	else cout << "Unable to open the file!";

Popularity 9/10 Helpfulness 5/10 Language cpp

Source: Grepper

Tags: binary bi

Link to this answer
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Contributed on Jun 26 2022

S.Y

0 Answers Avg Quality 2/10

binary file in c++

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