int main(int argc, char *argv[])
{
if (argc < 2) {
fprintf(stderr, "miss args\n");
usage(argv[0]);
exit(1);
}
struct calc_info *q = (struct calc_info *)malloc(sizeof(*q));
if (q == NULL) {
perror("malloc");
goto err_malloc;
}
calc_init(q);
num_t ret = 0;
int i;
for (i = 1; i < argc; ++i) {
ret = q->calc(q, argv[i]);
printf("\n---%s = %d----\n", argv[i], ret);
}
calc_destroy(q);
free(q);
return 0;
err_malloc:
return -1;
}
int main(int argc, char *argv[])
{
assert(argc >= 2);
struct calc_info *pcalc = (struct calc_info *)
malloc(sizeof(*pcalc));
assert(pcalc != NULL);
calc_init(pcalc);
printf("%s = %d\n", argv[1],
pcalc->parser(pcalc, argv[1]));
calc_destroy(pcalc);
free(pcalc);
return 0;
}
int main(int argc, char *argv[])
{
struct calc *this = NULL;
//const char *default_expr = \
"(--1 ++2 + +-3 * (1 + 1)) * 2";
const char *default_expr = "1 -+- 2";
if (argc == 1) {
this = calc_init(this, default_expr);
printf("%s = %d\n", default_expr, this->analyze(this, default_expr));
} else if (argc == 2) {
this = calc_init(this, argv[1]);
printf("%s = %d\n", argv[1], this->analyze(this, argv[1]));
} else {
printf("sorry, 最多只能传递一个参数！\n使用方法：可执行文件 要进行运算的表达式\n");
return 1;
}
calc_destroy(this);
return 0;
}
