Thread: Recreate program so everything is done in main()

For my programming course. I need to find a away to convert the following code so that everything is done in main(). The program is in C just for clarification. Please help. Thanks

/*
Description: The user is asked to type in the BASE
and HEIGHT of a TRIANGLE, and the program
will output the HEIGHT, BASE and AREA
of the TRIANGLE.
*/

Code:

#include <stdio.h>
#include <conio.h>
#include <stdlib.h>
#include "assign3header.h"

#define area_tri(b,h) (1.0/2.0)*(b)*(h)

float tri_area(float base, float height);
void explain_prog(void);
float get_base(void);
float get_height(void);
void display(float b, float h, float a);

main()
{
    float t_base, t_height, t_area;

    system("cls");

    explain();

    t_base = get_base();
    t_height = get_height();
    t_area = area_tri(t_base,t_height);
    answer = 0.5*base*height;
    display(t_base,t_height,t_area);

    puts("Press any key to exit this program...");

    system("pause");
}

void explain_prog(void)
{
    puts("\nThe user is asked to type in the BASE");
    puts("and HEIGHT of a TRIANGLE, and the program");
    puts("will output the HEIGHT, BASE and AREA");
    puts("of the TRIANGLE");
}

float get_base(void)
{
    float base;

    printf("\nPlease input BASE of your triangle: >");
    scanf("%f", &base);

    return(base);
}

float get_height(void)
{
    float height;

    printf("\nPlease input HEIGHT of your triangle: >");
    scanf("%f", &height);

    return(height);
}

void display(float b, float h, float a)
{
    printf("\nFor BASE %.2f and HEIGHT %.2f, the AREA is %.2f", b,h,a);
}

float tri_area(float base, float height)
{
    float answer;

    answer = 0.5*base*height;
    return(answer);
}

Do you understand what happens when a function is called? And after it completes?

Not entirely. My professor isn't a very good teacher. Im completely new at this and really have no idea whats going on here

Good or poor, professors can only guide you on your journey of programming. A bulk of the work and experience has to come from yourself.

If you have course material and/or text book, read up about functions. You can also find tutorials on the net (such as here), but nothing beats a good book in my opinion.

Then do a few sample programs using functions to get the hang of it.

This assignment is actually pretty easy once you understand what happens when functions are called. Pretty much all the code you need is present.

I do not wish to type out an entire lesson on functions (which is why I suggest reading up on it from your own resources), but the general idea is - when a function is called, program execution jumps to that function, the code in that function is executed, and then program execution resumes from the point that the function was originally called. You need to know a bit more about functions to do this assignment, but that is the basic idea.

I really can't give much more help without just giving away the answer. Do some reading, do some practice programs, and give it a shot. Post your attempt at the solution and any questions you have. Or even if you're still unsure, post some specific questions about what you're unclear on and we can give more focused advice.

Ok i see what your saying. So if the questions asked me to recreate the program so that everything is done in main(), would this be essentially satisfying the requirements?
Note: I attached the full code i had with the changes.

Code:

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

#define tri_area (1.0/2.0)*(base)*(height)

/*
void explain_prog(void);
float get_base(void);
float get_height(void);
float tri_area(float base, float height);
void display(float b, float h, float a);
*/

main()
{
    float base, height, area;

    system("cls");

    puts("\nThe user is asked to type in the BASE");
    puts("and HEIGHT of a TRIANGLE, and the program");
    puts("will output the HEIGHT, BASE, and AREA");
    puts("of the TRIANGLE.");
    puts("");

    printf("\nPlease input BASE of your triangle: >");
    scanf("%f", &base);

    printf("Please input the HEIGHT of your triangle: >");
    scanf("%f", &height);

    area=tri_area;

    printf("\nFor base %.2f and Height %.2f, the AREA is %.2f", base,height,area);    

    getch();
    return 0;
}


/*
main ()
{
    float t_base, t_height, t_area;

    system("cls");

    explain_prog();
    get_base();
    get_height();
    tri_area();
        
    
    //GET USER INPUT
    t_base=get_base();
    t_height=get_height();

    //CALCULATE AREA
    t_area=tri_area(t_base, t_height);
    

    //DISPLAY RESULTS
    display(t_base, t_height, t_area);

    puts("");
    system("pause");
}

void explain_prog(void)
{
    puts("\nThe user is asked to type in the BASE");
    puts("and HEIGHT of a TRIANGLE, and the program");
    puts("will output the HEIGHT, BASE, and AREA");
    puts("of the TRIANGLE.");
    puts("");
}

float get_base(void)
{
    float base;

    printf("\nPlease input BASE of your triangle: >");
    scanf("%f", &base);

    return(base);
}

float get_height(void)
{
    float height;

    printf("Please input the HEIGHT of your triangle: >");
    scanf("%f", &height);

    return(height);

}

float tri_area(float base, float height)
{
    float answer;

    answer=0.5*base*height;

    return(answer);
}

void display(float b, float h, float a)
{
    printf("\nFor base %.2f and Height %.2f, the AREA is %.2f", b,h,a);
}
*/