08_ArrayADT.c

#include <stdio.h>
#include <stdlib.h>
struct myarray
{
    int total_size;
    int used_size;
    int *ptr;
};

void createArray(struct myarray * a, int tSize, int uSize){
    // (*a).total_size = tSize;
    // (*a).used_size = uSize;
    // (*a).ptr = (int *)malloc(tSize * sizeof(int));
  
    a->total_size = tSize;
    a->used_size = uSize;
    a->ptr = (int *)malloc(tSize * sizeof(int));
}
void show(struct myarray *a){
    for(int i = 0;i < a->used_size;i++){
        printf("%d\n",(a->ptr)[i]);
    }
}
void setVal(struct myarray *a){
    int n;
    for(int i = 0;i < a->used_size;i++){
        printf("Enter elemnts %d",i);
        scanf("%d",&n);
        (a->ptr)[i] = n;
    }
}
int main(){
    struct myarray marks;
        createArray(&marks,100,5);    
        setVal(&marks);
        show(&marks);
    return 0;
}