Operating System concept 1 - Segmentation fault using C code

Understanding segmentation fault using C code

[rohanghige]

Exactly to the point... Good explaination ...

[reverb_mafia]

Dear Harshit SIR...i've been trying to execute this code on ubuntu version 16...here is the code and i get a segmentation fault everytime i try to compile it...sir ...please help me...please tell me the thing that is wrong with the code...please sir ...here's the code
#include<stdio.h>
#include<string.h>

void print(int *num, int n)
{
int i;
for ( i = 0 ; i < n ; i++)
printf("%d ", num[i]);
printf("\n");
}
int main()
{
int num[N];
int *ptr;
int temp;
int i, n, j;
printf("\nHow many number you want to enter: ");
scanf("%d", &n);
printf("\nEnter a list of numbers to see all combinations:\n");
for (i = 0 ; i < n; i++)
scanf("%d", &num[i]);
for (j = 1; j <= n; j++) {
for (i = 0; i < n-1; i++) {
temp = num[i];
num[i] = num[i+1];
num[i+1] = temp;
print(num, n);
}
}
return 0;
}...i hope you'll help me as soon as possible ...thanking you

[vitalisemanuelsetiawan]

thank you sir for your good explanation, i got the same problem, but my os is linux mint and everytime i use malloc or something like that i got segmentation fault idk why, but now i understand the basic thank you