The following is a program I wrote in gdb in the following link :
https://www.onlinegdb.com/online_c_compiler
#include <stdio.h>
#include <string.h>
int main()
{
char abc[] = "love";
char *hon[100];
FILE *d, *e;
int n;
char c;
d = fopen("demo.txt", "r");
/*e = fopen("demo.txt", "w");*/
/*n = fputs(abc,e);*/
printf( "jhjhj \n");
while ((n = getc(d)) != EOF)
{
printf( "kjkjkkj \n");
if (n == 'a')
{
/*e = d;*/
/*n = putc('k',e);*/
}
}
printf("%s", abc);
printf("abcdefgh %d hjhjh %d", 5, 6);
putchar(abc[1]);
}
But I am getting segmentation fault while trying to execute this code .
I went through the following question :
Segmentation fault is an error that comes when we try to access a memory location which is unassigned or the program doesn't have any access to or when one process tries to access a location of memory which another process is already accessing.
So , I thought that opening the same file in read and write mode might be resulting in this although I could not explain how that might be happening .
As such I commented the part which tries to access the file in "write" mode . Even after that I got the same segmentation fault error .
So , I put some messages before different parts of the code . As it turns out , I could not get the message just before the fopen .
I could not understand how might be violating access of memory rules here even after commenting out the part which opened the file in write mode .
Looking forward for insights and helps .
Is it because of the reason that file does not exists . But in that case , on encountering EOF it should exit out of the while loop , but why an error ?
