Niuke network decimal integer to hexadecimal string

Catalog

Title Description

Thought analysis

AC Code

---

Title Description

Write a function , Pass in a positive decimal integer , Converts a decimal integer to a hexadecimal string and returns .（ All the letters in the hexadecimal string are capitalized ）

Input description ：

Keyboard input a decimal positive integer

Output description ：

Output the hexadecimal string after decimal integer conversion

Example 1

Input ：

162

Copy output ：

A2

Copy

Example 2

Input ：

50

Copy output ：

32

Copy

Example 3

Input ：

501

Copy output ：

1F5

Thought analysis

The idea is simple , It is calculated according to the decimal to hexadecimal algorithm , Divide 16 Remainder , The key is flexible invocation string Class to complete the insertion work .

AC Code

#include<iostream>
#include<string>
using namespace std;
int main(){
	string hex;
	char bit;
	int deci;
	cin>>deci;
	do{
		if(deci%16<10)
		bit=deci%16+'0';
		else
		bit=deci%16+'A'-10;
		hex.insert(hex.begin(),bit);
		deci/=16;
	}while(deci);
	cout<<hex;
}