program to find sum of two distances measured in feet and inch using function.

using codeblocks
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//program to find sum of two distances measured in feet and inch using function.
//passing struct to function
//understanding struct to a function
#include<stdio.h>                           //header file
struct distance                             //struct tag
{
    int inch;                               //first member
    int feet;                               //second member
}d1,d2,tot;                                  //variables to access members
void sum( struct distance d1,struct distance d2);//function prototype/declaration
int main()
{
    printf("enter first inch and feet\n");
    scanf("%d%d",&d1.inch,&d1.feet);          //gets data
    printf("enter first inch and feet\n");
    scanf("%d%d",&d2.inch,&d2.feet);          //gets data
    sum(d1,d2);                               //calls the function
    return 0;
}
void sum(struct distance d1,struct distance d2) //function body line
{
    tot.inch=(d1.inch+d2.inch)%12;               //returns left part of inch
    tot.feet=d1.feet+d2.feet+(d1.inch+d2.inch)/12;//returns total feet
    printf("total inch=%d feet=%d\n",tot.inch,tot.feet);//prints result
}

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or

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//understanding struct to a function

#include<stdio.h>                           //header file

void sum( d1,d2);//function prototype/declaration with variables

struct distance                             //struct tag

{

    int inch;                               //first member

    int feet;                               //second member

}d1,d2,tot;                                  //variables to access members

int main()

{

    printf("enter first inch and feet\n");

    scanf("%d%d",&d1.inch,&d1.feet);          //gets data

    printf("enter first inch and feet\n");

    scanf("%d%d",&d2.inch,&d2.feet);          //gets data

    sum(d1,d2);                                            //calls the function

    return 0;

}

void sum(struct distance d1,struct distance d2) //function body line

{

    tot.inch=(d1.inch+d2.inch)%12;               //returns left part of inch

    tot.feet=d1.feet+d2.feet+(d1.inch+d2.inch)/12;//returns total feet

    printf("total inch=%d feet=%d\n",tot.inch,tot.feet);//prints result

}

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using turbo c++

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//understanding struct to a function

#include<stdio.h>                           //header file

#include<conio.h>                       //header file to hold output

struct distance                             //struct tag

{

    int inch;                               //first member

    int feet;                               //second member

}d1,d2,tot;                                  //variables to access members

void sum( struct distance d1,struct distance d2);//function prototype/declaration

int main()

{

    printf("enter first inch and feet\n");

    scanf("%d%d",&d1.inch,&d1.feet);          //gets data

    printf("enter first inch and feet\n");

    scanf("%d%d",&d2.inch,&d2.feet);          //gets data

    sum(d1,d2);                               //calls the function

getch();    

return 0;

}

void sum(struct distance d1,struct distance d2) //function body line

{

    tot.inch=(d1.inch+d2.inch)%12;               //returns left part of inch

    tot.feet=d1.feet+d2.feet+(d1.inch+d2.inch)/12;//returns total feet

    printf("total inch=%d feet=%d\n",tot.inch,tot.feet);//prints result

}