C 文件读写操作代码
Certainly! In the C programming language, you can perform file read and write operations
using the fopen, fclose, fread, and fwrite functions. Below is a simple example demonstrating
how to read from a file and write to a file in C:
c
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#include <stdio.h>
#include <stdlib.h>
int main() {
// File pointers
FILE *fileIn, *fileOut;
// Open the input file for reading
fileIn = fopen("input.txt", "r");
if (fileIn == NULL) {
perror("Error opening input file");
return EXIT_FAILURE;
}
// Open the output file for writing
fileOut = fopen("output.txt", "w");
if (fileOut == NULL) {
perror("Error opening output file");
fclose(fileIn);
return EXIT_FAILURE;
}
// Read from input file and write to output file
char buffer[1024];
size_t bytesRead;
while ((bytesRead = fread(buffer, 1, sizeof(buffer), fileIn)) > 0) {
fwrite(buffer, 1, bytesRead, fileOut);
}
// Close the files
fclose(fileIn);
fclose(fileOut);
printf("File read and write operation completed successfully.");
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