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Section 26.5 Dynamic Arrays of Structures: Pentagon
Subsection 26.5.1 Declare Vertices
Activity 26.6.
Use the function
createPolygon to create a pentagon (5 vertices) with vertices (0,0), (1,0), (2,1), (1,3), (0,1).
Compile and run the code below in your own C environment.
#include <stdio.h>
typedef struct {
float x;
float y;
} point_t;
void printPoint(point_t z);
void initializePoint(point_t *ptr, float x, float y);
int main(void) {
point_t z;
return 0;
}
void initializePoint(point_t *ptr, float x, float y) {
}
void printPoint(point_t z) {
}
Subsection 26.5.2 Print Pentagon
Activity 26.7.
Finally... Write a function
printPoly() to which you pass a polygon and a number (its number of vertices), and which prints out these vertices.
Compile and run the code below in your own C environment.
#include <stdio.h>
typedef struct {
float x;
float y;
} point_t;
void printPoint(point_t z);
void initializePoint(point_t *ptr, float x, float y);
int main(void) {
point_t z;
return 0;
}
void initializePoint(point_t *ptr, float x, float y) {
}
void printPoint(point_t z) {
}
Subsection 26.5.3 Don’t forget to free()!
Activity 26.8.
One last step, free the allocated memory!
Compile and run the code below in your own C environment.
#include <stdio.h>
typedef struct {
float x;
float y;
} point_t;
void printPoint(point_t z);
void initializePoint(point_t *ptr, float x, float y);
int main(void) {
point_t z;
return 0;
}
void initializePoint(point_t *ptr, float x, float y) {
}
void printPoint(point_t z) {
}
