Since structures are multivalue, multitype data objects, they can be considered to form a useful tool in manipulation of quantities such as vectors, complex variables, etc. For this we define functions of the type struct, i.e., the return value of the function is a structure. The function may have arguments of type struct besides other arguments. Let us define a structure with three components of vector as its data members as shown below.
struct vector { double x; double y; double z;};
Here, data variables x, y, and z are components of vectors. A function which adds two vectors and returns the resultant vector may be defined as below.
struct vector Vector_add(struct vector V1, struct vector V2)
{
struct vector sum;
sum.x = V1.x + V2.x;
sum.y = V1.y + V2.y; II definition of struct function
sum.z = V1.z + V2.z;
return sum;
}
Similar functions may be defined for other operations on vectors.
#include<stdio.h>
struct vector { double A[4] ; }; // structure with array as member
struct vector Addition(struct vector V1, struct vector V2);
struct vector Subtract(struct vector V1, struct vector V2);
void main()
{
int j,k;
struct vector V3, V4;
struct vector V1 = { 5.0, 6.0, 7.0, 8.0};
struct vector V2 = { 2.0, 2.0, 2.0, 2.0};
clrscr();
V3 =Addition( V1, V2);
V4 = Subtract(V1, V2);
printf("The components of V3 are:");
for ( j =0; j<4; j++)
printf("%.3f\t", V3.A[j]);
printf ("\n");
printf("The components of V4 are:");
for ( k =0; k<4; k++)
printf("%.2f\t", V4.A[k]);
printf ("\n");
}
struct vector Addition ( struct vector V1, struct vector V2)
{
int i;
struct vector sum;
for( i =0; i<4; i++)
sum.A[i] = V1.A[i] + V2.A[i];
return sum;
}
struct vector Subtract( struct vector V1, struct vector V2)
{
int i;
struct vector Result;
for( i =0; i<4; i++)
Result.A[i] = V1.A[i] - V2.A[i];
return Result;
}
Dinesh Thakur holds an B.SC (Computer Science), MCSE, MCDBA, CCNA, CCNP, A+, SCJP certifications. Dinesh authors the hugely popular Computer Notes blog. Where he writes how-to guides around Computer fundamental , computer software, Computer programming, and web apps. For any type of query or something that you think is missing, please feel free to Contact us.
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