Experiment 2-2-5 Finding the integer mean (10 points)

This question requires writing a program to calculate 4the sum and average of integers. The question guarantees that the input and output are within the integer range.

Input format:

Enter 4 integers in one line, separated by spaces.

Output format:

“Sum = 和; Average = 平均值”Output the sum and average value in a row in the order of format , where the average value is accurate to one decimal place.

Input sample:

1 2 3 4

Sample output:

Sum = 10; Average = 2.5

Code:

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

int main(){
    
    
    int x1,x2,x3,x4,sum;
    double average;
    scanf("%d %d %d %d",&x1,&x2,&x3,&x4);
    sum = x1 + x2 + x3 + x4;
    average = sum / 4.0;
    printf("Sum = %d; Average = %.1lf",sum,average);
    return 0;
}

Submit screenshot:

Problem-solving ideas:

Note that averagewhen you get the final result , divide by 4.0. Sometimes the front is an integer. Dividing by the back number will only get an integer, which is not the same as the result, so we have to construct a floating point number to make the result correct!