Question

Write a program in C language that calculates the speed of sound (a) in air of a given temperature T(˚F).  The formula to compute the speed in ft/sec is:

Use separate functions to:

• Print directions for the user.
• Read the temperature from the user.
• Calculate the speed.
• Print the temperature entered by the user and the speed of sound in air at that temperature, appropriately labelled with exactly 1 decimal place.

Compile, run and test your program.  

Answer 1

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

void print_header_description() {
    printf("This program asks the user to enter current temperature\n");
    printf("Then the program calculates and displays the speed of sound in air based on the given temperature\n\n");
}

double read_temperature() {
    double temp;
    printf("Enter temperature: ");
    scanf("%lf", &temp);
    return temp;
}

double find_speed_of_sound(double t) {
    return 1086 * sqrt((5*t + 297) / 247);
}

void print_speed_of_sound(double t) {
    double s = find_speed_of_sound(t);
    printf("Temperature is %.1f\n", t);
    printf("Speed of sound in air is %.1f\n", s);
}

int main() {
    print_header_description();
    double t = read_temperature();
    print_speed_of_sound(t);
    return 0;
}