Question

I am getting a bunch of errors. Really need help for C Programming using Microsoft Visual. Error Codes listed below code. Thank you.

#define _CRT_SECURE_NO_WARNINGS

#include

#include

#include

typedef struct

{

int *array;

int effectiveSize;

int maximumSize;

} DynamicArray;

void CreateArray(DynamicArray *pDynamicStruct, int initialSize)

{

pDynamicStruct->array = (int *)malloc(sizeof(int) * initialSize);

void ExpandArray(DynamicArray *pDynamicStruct);

{

DynamicArray pDynamicStructNew = (int *)malloc(sizeof(int) * pDynamicStruct->maximumSize * 2);

for (int i = 0l i < effectiveSize; i++);

pDynamicStructNew->array[i] = pDynamicStruct->array[i];

}

//3) Free the old pointer that is stored in the pDynamicSt

free(pDynamicStruct->array);

pDynamicStruct->array = pDynamicStructNew->array;

pDynamicStruct->maximumSize = pDynamicStruct->maximumSize * 2;

}

void PlaceValue(DynamicArray *pDynamicStruct, int value)

{

pDynamicStruct->array[effectiveSize] = value;

effective++;

if (effectiveSize == maximumSize)

ExpandArray(&pDynamicStruct);

}

int main(void)

{

int i;

DynamicArray dynamicArray;

CreateArray(&dynamicArray, 5);

PlaceValue(&dynamicArray, 5);

PlaceValue(&dynamicArray, 10);

PlaceValue(&dynamicArray, 15);

PlaceValue(&dynamicArray, 20);

PrintArray(&dynamicArray);

system("pause");

}

Warning               C4013    'PrintArray' undefined; assuming extern returning int      L 99       

Error (active)      E0144    a value of type "int *" cannot be used to initialize an entity of type "DynamicArray"               35          

Error (active)      E0065    expected a ';'                    41          

Error (active)      E0065    expected a ';'                    41          

Error (active)      E0044    expression must have pointer type                          43          

Error (active)      E0020    identifier "i" is undefined                             43          

Error (active)      E0020    identifier "pDynamicStructNew" is undefined                      53          

Error (active)      E0020    identifier "effectiveSize" is undefined                      65          

Error (active)      E0020    identifier "effective" is undefined                             69          

Error (active)      E0020    identifier "maximumSize" is undefined                   73          

Error      C2146    syntax error: missing ';' before identifier 'i'                          41          

Error      C2065    'effectiveSize': undeclared identifier                        41          

Error      C2059    syntax error: ')'                41          

Error      C2143    syntax error: missing ')' before ';'                             41          

Error      C2232    '->array': left operand has 'struct' type, use '.'                     43          

Error      C2065    'i': undeclared identifier                43          

Error      C2065    'pDynamicStructNew': undeclared identifier                        53          

Error      C2223    left of '->array' must point to struct/union                            53          

Error      C2440    'initializing': cannot convert from 'int *' to 'DynamicArray'                             35              

Error      C2065    'effectiveSize': undeclared identifier                        65          

Error      C2065    'effective': undeclared identifier                69          

Error      C2065    'effectiveSize': undeclared identifier                        73          

Error      C2065    'maximumSize': undeclared identifier                     73          

Warning               C4047    'function': 'DynamicArray *' differs in levels of indirection from 'DynamicArray **'                          75          

Warning               C4024    'ExpandArray': different types for formal and actual parameter 1                              75          

Answer 1

#define _CRT_SECURE_NO_WARNINGS

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

typedef struct {
    int *array;
    int effectiveSize;
    int maximumSize;
} DynamicArray;

void CreateArray(DynamicArray *pDynamicStruct, int initialSize) {
    pDynamicStruct->array = (int *) malloc(sizeof(int) * initialSize);
    pDynamicStruct->effectiveSize = 0;
    pDynamicStruct->maximumSize = initialSize;
}

void ExpandArray(DynamicArray *pDynamicStruct) {
    int *arr = (int *) malloc(sizeof(int) * pDynamicStruct->maximumSize * 2);
    for (int i = 0; i < pDynamicStruct->effectiveSize; i++)
        arr[i] = pDynamicStruct->array[i];
//3) Free the old pointer that is stored in the pDynamicSt
    free(pDynamicStruct->array);
    pDynamicStruct->array = arr;
    pDynamicStruct->maximumSize *= 2;
}

void PlaceValue(DynamicArray *pDynamicStruct, int value) {
    pDynamicStruct->array[pDynamicStruct->effectiveSize] = value;
    pDynamicStruct->effectiveSize++;
    if (pDynamicStruct->effectiveSize == pDynamicStruct->maximumSize)
        ExpandArray(pDynamicStruct);
}

void PrintArray(DynamicArray *pDynamicStruct) {
    int i;
    for(i = 0; i < pDynamicStruct->effectiveSize; ++i) {
        printf("%d ", pDynamicStruct->array[i]);
    }
    printf("\n");
}

int main(void) {
    int i;
    DynamicArray dynamicArray;
    CreateArray(&dynamicArray, 5);
    PlaceValue(&dynamicArray, 5);
    PlaceValue(&dynamicArray, 10);
    PlaceValue(&dynamicArray, 15);
    PlaceValue(&dynamicArray, 20);
    PrintArray(&dynamicArray);
    system("pause");
}