How do you convert decimal in integer to hexadecim

问题:

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Closed 6 years ago.

cout<<std::hex<<dec;

I want to store it to an int in the form of 0x...

How do I store that value in an integer instead of printing it out?

回答1:

If you have an integer value, and you want to print it just do the following (in C):

int number = 555;
printf("%d",number); //this prints number in decimal

printf("%x",number); //this prints number in haxadecimal

You must not forget, to a machine, there are only 0's and 1's. You just have to define the way you want to print it

In C++:

int number = 555;
std::cout << std::hex << number << std::endl; //this will print the number in hexadecimal

回答2:

You can store the value into a string stream first:

#include <stringstream>

std::stringstream ss;
ss << std::hex << dec;

int n;
ss >> n;