Page 1 of 1
[6.10] Always error with C Backend
Posted: Wed Apr 10, 2024 7:48 am
by al2791
With this code I have an error ;
Code: Select all
CompilerIf #PB_Compiler_ExecutableFormat<>#PB_Compiler_Console
CompilerError "Exec-Format must be Console in Compiler-Option"
CompilerEndIf
! int fact(int n) {
! if(n>=1)
! return n*fact(n-1);
! else return 1;
! }
OpenConsole()
! int number;
! printf("Enter a positive integer: ");
! scanf("%d",&number);
! printf("Factorial of %d = %d", number, fact(number));
Input()
CloseConsole()
‘PureBasic.obj’,
POLINK : fatal error : 1 unresolved external(s)
With 6.04 LTS C backend this program is ok
Re: [6.10] Always error with C Backend
Posted: Wed May 22, 2024 6:19 am
by jassing
Not ideal..
Code: Select all
OpenConsole()
! printf("Enter a positive integer: ");
number=Val(Input())
! printf("Factorial of %d = %d", v_number, fact(v_number));
Input()
CloseConsole()
A lot of what is considered "standard" functions are not available in PB's C
Re: [6.10] Always error with C Backend
Posted: Wed May 22, 2024 6:51 am
by Fred
This is not a bug, using such functions without proper declaration doesn't always work.
Re: [6.10] Always error with C Backend
Posted: Wed May 22, 2024 9:22 am
by infratec
Have you ever tried to run this code
Code: Select all
int fact(int n) {
if(n>=1)
return n*fact(n-1);
else return 1;
}
int main(void) {
int number;
printf("Enter a positive integer: ");
scanf("%d",&number);
printf("Factorial of %d = %d", number, fact(number));
return 0;
}
With a C compiler
Tell us the error messages.
Re: [6.10] Always error with C Backend
Posted: Wed May 22, 2024 11:06 am
by juergenkulow
gcc version 11.4.0 (Ubuntu 11.4.0-1ubuntu1~22.04):
Code: Select all
Enter a positive integer: 5
Factorial of 5 = 120k
Re: [6.10] Always error with C Backend
Posted: Wed May 22, 2024 10:19 pm
by jassing
Fred wrote: Wed May 22, 2024 6:51 am
This is not a bug, using such functions without proper declaration doesn't always work.
Even with declaration, it's still not linked.
Code: Select all
! int __cdecl scanf(const char * restrict, ...);
! int __cdecl printf(const char * restrict, ...);
printf() links fine.