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100·Ö Ö¸ÕëÎÊÌ⣺Access violation writing location

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ÌáʾΪ£ºUnhandled exception at 0x104817fd (msvcp80d.dll) in xxx.exe: 0xC0000005: Access violation writing location 0x3534444e.

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C/C++ code:

void Parser::ParseDataFile(char *filename, Canopy *canopy)
{
FILE* file;
fopen_s(&file,filename, "r");

if (!file) // Open file
{
fprintf(stderr, "ParseDataFile() failed: can't open data file \"%s\".\n",
filename);
exit(1);
}


Maize* ptrTempMaize = NULL;
Leaf* ptrTempLeaf = NULL;
Stem* ptrTempStem = NULL;

char buf[255];
int tempLeafIndex = 0;
int tempMaizeIndex = -1;

int RECORD_DATA_NUM = 16;

string sTempdate;
string sTempBreedName;
int iTempNum;
int iTempLeafIndex[RECORD_DATA_NUM];
float fTempBaseHeight[RECORD_DATA_NUM];
int iTempDrapeNum[RECORD_DATA_NUM];

// ½øÐжÁÎļþ
while (fscanf(file, "%s", buf)!=EOF)
{
switch(buf[0])
{
case


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