Bifalgorithm post · Computer science one · Closing Files

How do you write and read binary data in C?

How do you write and read binary data in C? (Computer science one · Closing Files) — "int x = 10;\n\nFILE *binaryOutputFile = fopen(\"demo.bin\", \"w\");\n\n//…

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Binary file input and output in C
Writing binary data
Initialize the integer: int x = 10;
Open demo.bin for writing
Write one integer with fwrite
Reading binary data
Open input.bin for reading
Read one integer with fread
Allocate space for an array of 10 integers
Read the entire array with fread

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How do you write and read binary data in C?

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Computer science one

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sam23

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"int x = 10;\n\nFILE *binaryOutputFile = fopen(\"demo.bin\", \"w\");\n\n//write a single int to a file:\n\nfwrite(&x, sizeof(int), 1, binaryOutputFile);\n\nFILE *binaryInputFile = fopen(\"input.bin\", \"r\");\n\n//read a single int from the file:\n\nfread(&x, sizeof(int), 1, binaryInputFile);\n\n//read an entire array from the file:\n\nint *a = (int *) malloc(10 * sizeof(int));\n\nfread(a, sizeof(int), 10, binaryInputFile);"

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