Experiment 2-4-6 Finding the sum of powers (15 points)

This question requires writing a program to calculate
$$sum=2^1+2^2+2^3+\cdots +2^n$$
​​ can be exponentiated by calling the pow function.

Input format:

Enter a positive integer in one line n（≤10）.

Output format:

result = 计算结果Output in the format " ".

Input sample:

5

Sample output:

result = 62

Code:

# include <stdio.h>
# include <stdlib.h>
# include <math.h>

int main() {
    
    
    int n,result = 0,i;
    scanf("%d",&n);
    for (i=1;i<=n;i++) {
    
    
        result += pow(2,i);
    }
    printf("result = %d",result);
    return 0;
}

Submit screenshot:

Problem-solving ideas:

Nothing to say, basic operation!