diff options
Diffstat (limited to 'reference/C/CONTRIB/OR_USING_C/02.1.c')
-rw-r--r-- | reference/C/CONTRIB/OR_USING_C/02.1.c | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/reference/C/CONTRIB/OR_USING_C/02.1.c b/reference/C/CONTRIB/OR_USING_C/02.1.c new file mode 100644 index 0000000..bade646 --- /dev/null +++ b/reference/C/CONTRIB/OR_USING_C/02.1.c @@ -0,0 +1,49 @@ + +#include <stdio.h> + +main(argc, argv) +int argc; +char **argv; +{ + int c; + FILE *from, *to; + + /* + * Check our arguments. + */ + if (argc != 3) { + fprintf(stderr, "Usage: %s from-file to-file\n", *argv); + exit(1); + } + + /* + * Open the from-file for reading. + */ + if ((from = fopen(argv[1], "r")) == NULL) { + perror(argv[1]); + exit(1); + } + + /* + * Open the to-file for appending. If to-file does + * not exist, fopen will create it. + */ + if ((to = fopen(argv[2], "a")) == NULL) { + perror(argv[2]); + exit(1); + } + + /* + * Now read characters from from-file until we + * hit end-of-file, and put them onto to-file. + */ + while ((c = getc(from)) != EOF) + putc(c, to); + + /* + * Now close the files. + */ + fclose(from); + fclose(to); + exit(0); +} |