Data Structure

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

struct point{
int x;
int y;


};

void readStruct(struct point *temp,int num);
void writeStruct(struct point *temp,int num);
void taskthree(struct point *temp,struct point *temp1,int num);
void initstruct(struct point *temp,int num);

int main(){
int num;

printf("How many points do you have ?");
scanf("%d",&num);

struct point *ball;
struct point *A;
ball=(struct point *) malloc(num*sizeof(struct point));
A=(struct point *) malloc(num*sizeof(struct point));

initstruct(A,num);
readStruct(ball,num);
printf("You Entered:\n");
writeStruct(ball,num);
printf("\nSquare of x and y coordinate:\n");
taskthree(ball,A,num);
writeStruct(A,num);

return 0;
}

void readStruct(struct point *temp,int num){
int i;
for(i=0;i<num;i++){
printf("Enter x:");
scanf("%d",&(temp+i)->x);
printf("Enter y:");
scanf("%d",&(temp+i)->y);
}

}

void writeStruct(struct point *temp,int num){
int i;
for(i=0;i<num;i++){
printf("X:%d\n",(temp+i)->x);
printf("Y:%d\n",(temp+i)->y);
printf("//////////\n");
}


}

void taskthree(struct point *temp,struct point *temp1,int num){
int i;

for(i=0;i<num;i++){
(temp1+i)->x=((temp+i)->x)*((temp+i)->x);
(temp1+i)->y=((temp+i)->y)*((temp+i)->y);
}





}

void initstruct(struct point *temp,int num){
int i;
for(i=0;i<num;i++){
(temp+i)->x=0;
(temp+i)->y=0;

}




}