Some Visual 2010 issue

In VS2010, the default compiler is C++, but we need test Fardad's C program.

So, I need change it.

Right click Your_Project, choose properties,
click Configration Properties, choose C/C++, choose Advanced
change the compile as default to as C code, click Apply.


It finished and I can use f5 to debug and show the console result

Today's Content: lazy evaluation

C compiler check 1st condition, true, jump to 2nd; false, jump out. It is called lazy evaluation


#include

int main(){

int a = 3;
int b = 1;

(a < 2 && b = b+1);
printf ("1, b : %d\n", b);

(a < 2 || b = b+1);
printf ("2, b : %d\n", b);



return 0;
}

Will output:
1, b : 1 //complier jump out
2, b : 2

A tiny C compiler: TCC

TCC is a interesting and tiny C compiler.
You can download from
http://bellard.org/tcc/

c program review: scanf function

scanf function return value:

void main()
{
int a;
int b;
int c;
printf("Enter three number: ");
int x=scanf("%d%d%d",&a,&b,&c);
printf("%d/n%d/n",a,x);
}

x is the scanf() function return value == the valid input number

if input 5 6 7 ; x is 3
if input 5 6 d ; x is 2

First day

This blog build for OOP344 course