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actually the structure doesn't have the same variable type , it has arrays , and different variable types. in the example above , i was just trying to deliver the idea behind the question.
Anyways,...

I have a Struct containing about a 300 variables

struct Test
{
int variable1;
int variable 2;
.
.
.
int variable300;

Thx for the reply ,
Actually i just wanted to show how i wanted the result to be. the actual string would be of variable length.so i need a function to transform the string characters to...

i need to convert a string to hexadecimal as follows :

String : "12345678"
needs to be converted to a
char value[4] = { '0x12' ,'0x34' , '0x56' , '0x78'};

How Can that be done ?

Thx