Assign Struct array size after execution

[luckyyyyyy]

Hi...
actually i want to assign the struct array value after execution...is it possible?...for example:
struct data
{
double x, y, z;
};
data objData[1000];

i want to assign objData value 1000 after execution...mean when i execute the program then intially program asked from user to
Enter the value of data structure.
then the whole programe start...
thanks...

[weaknessforcats]

You have to allocate the array on the heap rather than on the stack.

You don't say whether you are using C or C++. That's important because the allocation is different.

In C, you use malloc:

data* objData = (data*)malloc(sizeof(double) * UserEnteredValue);
 

In C++ you use the new operator:

data* objData = new data[UserEnteredValue];
 

Then remember that since you allocated the memory you are responsible to release it when you are finished with it.

In C you use free():

free(objData);
 

In C++ you use delete:

delete [] objData;