Binary to Decimal

Problem Statement

Input Format

A binary string consisting of '0' and '1'.

Output Format

Print the decimal integer equivalent.

Constraints

1 <= Length <= 30

Sample Input

101

Sample Output

5

Explanation

Binary 101 represents 1*4 + 0*2 + 1*1 = 5 in decimal.

Starter Code

#include <stdio.h>

int main() {
    char s[32];
    if (scanf("%31s", s) == 1) {
        // Write your code here
    }
    return 0;
}

Limits

• Time Limit: 1s
• Memory Limit: 256MB