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void GetMemory(char *p, int num)
{
p= (char *)malloc(sizeof(char) * num);
}
int main(void)
{
char *str = NULL;
GetMemory( str, 100 ); // str ÈÔȻΪ NULL
strcpy(str, "hello"); // ÔËÐдíÎó
return 0;
}
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