c++ - Assign int value to a pointer -

i need assign int value pointer, how it?

below small example of want.

struct {   int a; } name; int temp = 3; struct name *obj = null; 

now, need assign value '3' struct's 'a'.

with

struct {    int a; }name; 

you define struct variable allocates memory struct (e.g. on stack when local variable inside function). then, int temp = 3;, sufficient assign struct member like

name.a = temp; 

if want declare struct type only, use

struct name {    int a; }; 

then can define number of struct variables based on type, like

struct name thename; 

and same assignment thename members above:

thename.a = temp; 

or, can define pointer struct , have allocate memory yourself:

struct name *nameptr; nameptr = malloc(sizeof(struct name)); nameptr->a = temp; 

note have tagged question both c , c++ - structs, should decide language take - see differences between struct in c , c++.