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Q&A Why does this code that uses a pointer-to-pointer-to-int segfault?

Hello folks, can someone resolve this seg fault with me please, i can't find the error where it occur. Thank you. #include <stdlib.h> #include <stdio.h> int ft_ultimate_range(int *...

1 answer · posted 3y ago by M3dc0d‭ · last activity 3y ago by Lundin‭

Question c gcc segmentation-fault

#2: Post edited by

Canina‭ · 2021-07-13T16:31:47Z (almost 3 years ago)

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~~Create a function ft_ultimate_range which allocates and assigns an array of ints. This int array should contain all values between min and max. • Min included - max excluded.~~

Why does this code that uses a pointer-to-pointer-to-int segfault?

Hello folks, can someone resolve this seg fault with me please, i can't find the error where it occur. Thank you.
~~```#include <stdlib.h>~~
#include <stdio.h>
int ft_ultimate_range(int **range, int min, int max)
{
int lentgh;
int i;
int mi;
mi = min;
lentgh = max - min;
if (min >= max)
{
// *range = NULL;
return (0);
}
*range = malloc(sizeof(int) * lentgh);
if(!range)
{
return 0;
}
i = 0;
while (min < max)
{
range[0][i] = mi;
i++;
mi++;
}
return (i);
}
~~`int main()~~
{
int i = 0;
int min = 5;
int max = 19;
int **range = 0;
int ptr = ft_ultimate_range(range, min, max);`
while(i < max - min)
{
printf("%d\n", ptr);
i++;
}
return (0);
~~}```~~

Hello folks, can someone resolve this seg fault with me please, i can't find the error where it occur. Thank you.
```
#include <stdlib.h>
#include <stdio.h>
int ft_ultimate_range(int **range, int min, int max)
{
int lentgh;
int i;
int mi;
mi = min;
lentgh = max - min;
if (min >= max)
{
// *range = NULL;
return (0);
}
*range = malloc(sizeof(int) * lentgh);
if(!range)
{
return 0;
}
i = 0;
while (min < max)
{
range[0][i] = mi;
i++;
mi++;
}
return (i);
}
int main()
{
int i = 0;
int min = 5;
int max = 19;
int **range = 0;
int ptr = ft_ultimate_range(range, min, max);`
while(i < max - min)
{
printf("%d\n", ptr);
i++;
}
return (0);
}
```

#1: Initial revision by

M3dc0d‭ · 2021-07-13T11:45:03Z (almost 3 years ago)

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Create a function ft_ultimate_range which allocates and assigns an array of ints. This int array should contain all values between min and max. • Min included - max excluded.

Hello folks, can someone resolve this seg fault with me please, i can't find the error where it occur. Thank you.

```#include <stdlib.h>
 #include <stdio.h>
 int ft_ultimate_range(int **range, int min, int max)
 {
    int lentgh;
    int i;
    int mi;
    
    mi = min;
    lentgh = max - min;
    if (min >= max)
    {
        // *range = NULL;
        return (0);
    }
    *range = malloc(sizeof(int) * lentgh);
    if(!range)
    {
        return 0;
    }
    i = 0;
    while (min < max)
    {
        range[0][i] = mi;
        i++;
        mi++;
    }
    return (i);
}

`int main()
 {
    int i = 0;
    int min = 5;
    int max = 19;
    int **range = 0;
    int ptr = ft_ultimate_range(range, min, max);`

    while(i < max - min)
    {
        printf("%d\n", ptr);
        i++;
    }
    return (0);
}```

c gcc segmentation-fault

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