Programming

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

int *make_list(void); 
void get_num(int *); 
void print_reverse(int *, int); 

int main(void)
{
    int *v = NULL; 

    
    v = make_list(); 

    return 0; 
}

int *make_list(void)
{
    int n = 0; 
    int i = 0; 
    int *tmp = NULL; 
    
    printf("how long? "); 
    get_num(&n); 
    tmp = (int *) malloc(n * sizeof(int)); 

    for (i = 0; i < n; i++) {
        printf("value "); 
        get_num(tmp+i); 
    }
    return tmp; 
}


void get_num(int *n)
{
    char buf[BUFSIZ]; 

    printf("number: "); 
    fgets(buf, sizeof(buf), stdin); 
    *n = atoi(buf); 
}

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


struct numlist {
    int *v; 
    int n; 
}; 


struct numlist make_list(void); 
void print_list(struct numlist list); 
void get_num(int *); 

int main(void) 
{
    struct numlist numbers; 


    numbers = make_list(); 
    print_list(numbers);     

    return 0; 
}


struct numlist make_list(void)
{
    struct numlist tmp; 
    int n = 0; 
    int i = 0; 

    printf("list len "); 
    get_num(&n); 

    tmp.n = n; 
    tmp.v = (int *) malloc(tmp.n * sizeof(int)); 
    if ( tmp.v == NULL ) {
        fprintf(stderr, "memory error\n"); 
        exit(-1); 
    }


    for (i = 0; i < n; i++) {
          printf("list element "); 
          get_num(tmp.v + i); 
    }


    return tmp; 
}


void print_list(struct numlist list)
{
    int i = 0; 
    
    printf("\n\tresulting list\n"); 
    for (i = 0; i < list.n; i++) {
        printf("element with index %d has value: %d\n",
                i, list.v[i]); 
    }
}


void get_num(int *x)
{
    char buf[BUFSIZ]; 

    printf("number: "); 
    fgets(buf, sizeof(buf), stdin); 
    *x = atoi(buf); 
}