Question

How to find the highest digit in int number with C++

Answer 1

#include <iostream>
 
int getTheHighestDigit(int n) {
    int max = 0;
    while(n) {
        if (n % 10 > max) max = n % 10;
        n /= 10;
    }
    return max;
}
 
int main() {
    int n = 213;
    std::cout << getTheHighestDigit(n) << "\n";
       
    n = 76594;
    std::cout << getTheHighestDigit(n) << "\n";
       
    n = 76852;
    std::cout <<  getTheHighestDigit(n) << "\n";
}
 
 
 
/*
run:
 
3
9
8
 
*/

 

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