Question

im trying to generate random numbers for a linked list and it is giving me the same number 20 times. what am i doing wrong.

Answer 1

Try this code:

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

typedef struct node {
int data;
struct node *next;
} node;

node *newNode(int data) {
node *new_node = (node *) malloc(sizeof(node));
new_node->data = data;

new_node->next = NULL;;
return new_node;
}

node *insert_node(node *root, int data) {
if (root == NULL)
return newNode(data);
else {
node *cur;

cur = insert_node(root->next, data);
root->next = cur;

}
return root;
}

void print(node *np) {
if (np) {
printf("(%d)", np->data);
print(np->next);
}
}

int main() {
int T = 20;
node *root = NULL;
while (T-- > 0) {
int r = rand() % 200;
root = insert_node(root, r);
}
print(root);
printf("\n");
return 0;
}

Output:

(183)(86)(177)(115)(193)(135)(186)(92)(49)(21)(162)(27)(90)(59)(163)(126)(140)(26)(172)(136)

Screenshots:

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3.Output: