以下程序的功能是将文件file1.c的内容输出到屏幕上并复制到文件file2.c中。 #include < stdio. h> int main() { FILE * fp1, * fp2; char ch; fp1= fopen("file1.c","r"); fp2= fopen("file2.c","w"); while( 1 ) { ch= fgec( fp1 ); putchar( 2 ); fputc(ch, 3 ); } fclose(fp1); fclose(fp2); return 0; }