C++(씨쁠쁠)(cplusplus)-백준(baekjoon)(BaekJoon)코딩 1550번:16진수 답

#include <iostream>
#include <string.h>
#include <cmath>
using namespace std;
int main() {
    char word[7];
    int ans = 0;
    cin >> word;
    
    for (int i = 0; i < strlen(word); i++)
    {
        
        if (word[i] == 'A')
        {
            ans+=pow(16,strlen(word)-i-1)*10;
        }
        else if (word[i] == 'B')
        {
            ans += pow(16, strlen(word) - i-1) * 11;
        }
        else if (word[i] == 'C')
        {
            ans += pow(16, strlen(word) - i-1) * 12;
        }
        else if (word[i] == 'D')
        {
            ans += pow(16, strlen(word) - i-1) * 13;
        }
        else if (word[i] == 'E')
        {
            ans += pow(16, strlen(word) - i-1) * 14;
        }
        else if (word[i] == 'F')
        {
            ans += pow(16, strlen(word) - i-1) * 15;
        }
        else
        {
            ans += pow(16, strlen(word) - i-1)*(word[i] - '0');
        }
    }
    cout << ans;
 
}