How do I turn this code into a typedef struct in C?

Question

1.00/5 (1 vote)

See more:

#include <stdio.h>
#include<stdlib.h>
struct Distance
{
int feet;
float inch;
} dist1, dist2, sum;
int main()
{
struct Distance* distance1 = NULL; 
struct Distance* distance2 = NULL; 
struct Distance* distance3 = NULL; 
distance1 = (struct Distance*)malloc(sizeof(struct Distance*));
distance2 = (struct Distance*)malloc(sizeof(struct Distance*));
distance3 = (struct Distance*)malloc(sizeof(struct Distance*));
printf("input feet for distance no.1:");
scanf("%d", &distance1->feet); printf("input inch for distance no.1:");
scanf("%f", &distance1->inch); printf("input feet for distance no.2:");
scanf("%d", &distance2->feet); printf("input inch for distance no.2:");
scanf("%f", &distance2->inch); printf("input feet for distance no.3:");
scanf("%d", &distance3->feet); printf("input inch for distance no.3:");
scanf("%f", &distance3->inch); printf("1st distance\n");
printf("Enter feet: ");
scanf("%d", &dist1.feet); printf("Enter inch: ");
scanf("%f", &dist1.inch);
printf("2nd distance\n"); printf("Enter feet: ");
scanf("%d", &dist2.feet); printf("Enter inch: ");
scanf("%f", &dist2.inch); // adding feet
sum.feet = dist1.feet + dist2.feet;
// adding inches
sum.inch = dist1.inch + dist2.inch; // changing to feet if inch is greater than 12
while (sum.inch >= 12)
{
++sum.feet;
sum.inch = sum.inch - 12;
} printf("Sum of distances = %d\'-%.1f\"", sum.feet, sum.inch);
return 0;
}

What I have tried:

I'm pretty new to C I hope I could get some hep

Posted 7-Oct-21 6:32am

aj aj 2021

Updated 7-Oct-21 7:00am

Add a Solution

Comments

Richard MacCutchan 7-Oct-21 12:35pm

What exactly are you trying to do? A typedef is merely a compiler shorthand, it does not do anything special.

2 solutions

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

CPallini · Answer 1 · 2021-10-07T07:00:00

Like Richard already said, typedef is just syntax sugar.
Anyway, here you are

C

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

typedef struct 
{
  int feet;
  float inch;
} Distance;
 

Distance dist1, dist2, sum;

int main()
{
  Distance* distance1 = NULL; 
  Distance* distance2 = NULL;
  Distance* distance3 = NULL;
  distance1 = (Distance*)malloc(sizeof(Distance*));
  distance2 = (Distance*)malloc(sizeof(Distance*));
  distance3 = (Distance*)malloc(sizeof(Distance*));
  printf("input feet for distance no.1:");
  scanf("%d", &distance1->feet); printf("input inch for distance no.1:");
  scanf("%f", &distance1->inch); printf("input feet for distance no.2:");
  scanf("%d", &distance2->feet); printf("input inch for distance no.2:");
  scanf("%f", &distance2->inch); printf("input feet for distance no.3:");
  scanf("%d", &distance3->feet); printf("input inch for distance no.3:");
  scanf("%f", &distance3->inch); printf("1st distance\n");
  printf("Enter feet: ");
  scanf("%d", &dist1.feet); printf("Enter inch: ");
  scanf("%f", &dist1.inch);
  printf("2nd distance\n"); printf("Enter feet: ");
  scanf("%d", &dist2.feet); printf("Enter inch: ");
  scanf("%f", &dist2.inch); // adding feet
  sum.feet = dist1.feet + dist2.feet;
  // adding inches
  sum.inch = dist1.inch + dist2.inch; // changing to feet if inch is greater than 12
  while (sum.inch >= 12)
  {
    ++sum.feet;
    sum.inch = sum.inch - 12;
  } printf("Sum of distances = %d\'-%.1f\"", sum.feet, sum.inch);
  return 0;
}

Please note:
each call to malloc is like a sword of Damocles hanging above your head. You should check the returned pointer value before actually use it (malloc may fail) and, at the end you should release all the successfully allocated memory (see free - cppreference.com[^]).

OriginalGriff · Answer 2 · 2021-10-07T06:50:00

Solution 1

With a struct, typedef just creates a "more friendly" name for a struct, to prevent you having to use the full name each time:

C++

typedef struct 
    {
    int feet;
    float inch;
    } Distance;
Distance dist1, dist2, sum;
int main()
    {
    dist1.feet = 3;
...
    return 0;
    }

Posted 7-Oct-21 6:50am

OriginalGriff