Write a C program to calculate the average of three numbers.

Understand the Problem

The question asks for a C program that calculates the average of three numbers, including instructions on input and output formatting.

Answer

```c #include <stdio.h> #include <math.h> int main() { float num1, num2, num3, average; printf("Enter three numbers: "); scanf("%f %f %f", &num1, &num2, &num3); average = (num1 + num2 + num3) / 3; printf("The average is: %.2f\n", average); return 0; } ```

Answer for screen readers

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

int main() {
    float num1, num2, num3, average;

    printf("Enter three numbers: ");
    scanf("%f %f %f", &num1, &num2, &num3);
    
    average = (num1 + num2 + num3) / 3;

    printf("The average is: %.2f\n", average);

    return 0;
}

Steps to Solve

Include Necessary Libraries Include the standard input-output library and the math library to perform input and output operations.

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

Declare Variables Declare variables to store the three numbers and the average.

float num1, num2, num3, average;

Input the Numbers Use printf to prompt the user to input three numbers and scanf to read the numbers.

printf("Enter three numbers: ");
scanf("%f %f %f", &num1, &num2, &num3);

Calculate the Average Calculate the average using the formula for the average of three numbers.

average = (num1 + num2 + num3) / 3;

Output the Average Print the calculated average to the console.

printf("The average is: %.2f\n", average);

Return Statement End the program with a return statement.

return 0;

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

int main() {
    float num1, num2, num3, average;

    printf("Enter three numbers: ");
    scanf("%f %f %f", &num1, &num2, &num3);
    
    average = (num1 + num2 + num3) / 3;

    printf("The average is: %.2f\n", average);

    return 0;
}

More Information

This C program calculates the average of three floating-point numbers entered by the user. The average is displayed with two decimal points for clarity.

Tips

Forgetting to include necessary libraries: Always ensure #include <stdio.h> and #include <math.h> are included in your code.
Incorrect format specifiers in scanf or printf: Ensure you use %f for floating-point numbers and format the output correctly.
Forgetting the return 0; statement: This is essential to indicate that the program has finished executing successfully.

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