c - 如何避免 if else 的多重链

Question

您好，我有一段代码如下，我想避免使用多个 if else，有没有更好的方法:

if(strcmp(somename, "some") == 0)
{
    fun();
}
else if(strcmp(somename,"some1") == 0)
{
    fun();
}
else if(strcmp(somename,"some2") == 0)
{
    fun();
}
else if(strcmp(somename,"some3") == 0)
{
    fun();
}

Answer 1

您可以使用指向指针的指针和循环:

const char *ap[] = {"some", "some1", "some2", "some3", NULL};
const char **p = ap;

while (*p) {
    if (strcmp(somename, *p) == 0) {
       fun();
       break;
    }
    p++;
}