c - realloc 和指向 c 结构和函数中的整数比较问题的指针

Question

typedef struct 
{
    int* data;
    unsigned int len;
}intarr_t;

intarr_result_t intarr_push( intarr_t* ia, int val )
{
    intarr_t* tmp;
    // Warning too few arguments to function ‘realloc’
    tmp = realloc(intarr_t, (ia-> len+1)*sizeof *intarr_t); // problem here..
    ia = tmp;
    ia->data[ia->len+1] = val;
    for (eye = 0; eye < 30; eye++)
    { 
            // Warning passing argument 1 ointarr.c:140:17: error: expected expression before ‘intarr_t’
   tmp = realloc(intarr_t, (ia->len+1)*sizeof(intarr_t));f ‘free’ makes pointer from 
                //integer without a cast
                free(tmp->data[eye]);
                free(tmp);
    } 
}

我目前尝试编写一个程序来将一个值附加到传递给我的数组上，但无论我做什么，这些小问题似乎都会发生。有人可以向我解释这里的根本问题以及如何解决吗？

我已经尝试了大家的建议，但是我得到了这个错误:

intarr.c:140:17: error: expected expression before ‘intarr_t’
   tmp = realloc(intarr_t, (ia->len+1)*sizeof(intarr_t));
                 ^
intarr.c:140:17: error: too few arguments to function ‘realloc’

Answer 1

也许，它应该在下面。

intarr_result_t intarr_push(intarr_t* ia, int val )
{
    int *tmp;
    tmp = realloc(ia->data, (ia->len+1)* sizeof *ia->data);
    if(tmp)
        ia->data = tmp;
    else {
        free(ia->data);
        exit(-1);//or return something;
    }
    ia->data[ia->len++] = val;//update len
    return something;
}