#include<stdio.h> main() { int *p = 15; printf("%d",*p); }
Sure! Here is an explanation of each step in the given code:
The first line
#include<stdio.h>
is a preprocessor directive that tells the compiler to include the stdio.h header file. This file contains declarations for standard input/output functions such as printf.The
main()
function is the entry point of a C program. It is where the program execution begins.The line
int p = 15;
declares a variablep
as a pointer to an integer. The asterisk () beforep
indicates thatp
is a pointer. The value15
is assigned top
, which is incorrect becausep
is a pointer and should store the address of an integer variable, not a value.The line
printf("%d",*p);
is a function call toprintf
, which is used to print formatted output to the console. In this case, it prints the value pointed to byp
using the%d
format specifier.Since
p
is incorrectly assigned the value15
, the behavior of dereferencingp
using*p
is undefined. It may result in a segmentation fault or any other runtime error.
Overall, this code has a logical error in assigning an integer value to a pointer variable, which leads to undefined behavior when trying to access the value pointed to by the pointer.