C语言基础:文件拷贝
#include <stdio.h> int main(void) { FILE *input, *output; int letter; if ((input = fopen("\\CONFIG.SYS", "r")) == NULL) printf("Error opening \\CONFIG.SYS\n"); else if ((output = fopen("\\CONFIG.TST", "w")) == NULL) printf("Error opening \\CONFIG.TST\n"); else { // Read and write each character in the file while ((letter = fgetc(input)) != EOF) fputc(letter, output); fclose(input); // Close the input file fclose(output); // Close the output file } return 1; }