Interesting Facts about C language

• C is a general-purpose, imperative computer programming language.
•  C is invented to write Operating system called UNIX 
• We already familiar with C language right?? 
• Then lets See... I am here to share some Interesting Facts In C Programming.

• Main is not compulsory

#include<stdio.h>
 #include BK m##a##i##n
 int BK()
 {
printf("SOOKSHMAS.");   
  }

It prints => SOOKSHMAS 

• 2. We can use #include in any strange place 

void main() 
{
 printf 
#include"next.c"
  }
And "next.c" contains :

      ("SOOKSHMAS!\n");

It gives output as SOOKSHMAS 

• 3. A switch statement's case labels can occur inside if-else statements or in loops.i.e

switch (x)  {  case 1:; // ...
if (y==2)
      {
        case 2:;
        // ...
      }
 else case 3:
      {
        // ...

    for (b=0;b<10;b++)
        {
          case 4:;
          // ...
        }
      }
      break;
    case 5:
      // ...
      break;
}

• 4.Argument index specification in printf format specifier :

•  #include<stdio.>
  void main() 
   {
   printf("%4$d  %3$d  %2$d  %1$d ", 1, 2, 3,4);  
    }

    It will print as 4 3 2 1

• 5. Ignoring input in scanf:

• #include<stdio.h>
  void main()  
    {
    int a;
    scanf("%d",&a);
    printf("%d",a);    
     }

  When we excute thiz code it will not ask u any input instead it give '0' as output 

• 6. '<:, :>, <%, %>' in place of '[, ], {, }',

• Earlier years when it was hard to write '[, ], {, }', C actually accepted '<:, :>, <%, %>' respectively .

int main() <%

    int a <: 5 :>;
    a<:0:>=1;
printf("%d",a<:0:>);
   return 0;

%>

It prints output 1  Try it 

• 7. a[index] is same as index[a]

   #include< stdio.h >
  
      int main() {
  
         int a[10];
  
         a[0]=1;
  printf("%d", 0[a] );
  
       return 0;     }

  It will gives output as 1 

 These are some interesting facts about C language