问试图在C中创建一个基本的数组实用程序

EN

#define _OUT_OF_RANGE_ = NAN

#ifndef INT_ALLOCATE_H
#define INT_ALLOCATE_H
int * allocIntArray(const int size);
#endif

#ifndef INT_ACCESS_H
#define INT_ACCESS_H
int accessIntArray(const int index, const int * array, const bool checked);
#endif

#ifndef INT_FREE_H
#define INT_FREE_H
int freeIntArray(int * array);
#endif

/* Allocates an array of integers equal to length size
 * Args: int size: length of the array
 * Return: Allocated array
 */
int * allocIntArray(const int size){
    /*Assert that size of array is greater than zero*/
    if(size <= 0){
        return(-1);
    }
    else{
        return((int*)malloc(size*sizeof(int)));
    }
}
/* Returns the value of the array 
 * Args: int    index:   position in the array to access
 *       int  * array:   array to access
 *       bool   checked: if the access should be checked or not
 * Returns: integer at position index
 */
int accessIntArray(const int index, const int * array, const bool checked){
    /*unchecked access*/
    if(!checked){
        return(array[index]);
    }
    /*checked access*/
    else{
        if(index <= 0){
            return(_OUT_OF_RANGE_)
        }
        double size = (double)sizeof(array)/(double)sizeof(int)
        if(index => (int)size){
            return(_OUT_OF_RANGE_)
        }
        else{
            return(array[index])
        }
    }
}

/* Frees the allocated array 
 * Args: int * array: the array to free
 * Returns: 0 on successful completion
 */
int freeIntArray(int * array){
    free(array);
    return(0);
}

#include "arrayUtil.h"
int main(){
    int * array = allocIntArray(20);
    return(0);
}

gcc utilTest.c