void main()
{
      int i;
      printf("%d", scanf("%d", &i)); // value 10 is given as input here
}

void main()
{
      int i=0;
      for(;i++;printf("%d", i));
      printf("%d", i);
}

void main()
{
      char *str1 = "abcd";
      char str2[] = "abcd";
      printf("%d %d %d", sizeof(str1), sizeof(str2), sizeof("abcd"));
}

void main()
{
      struct xx
      {
            int x=3;
            char name[] = "hello";
      };
      struct xx *s = malloc(sizeof(struct xx));
      printf("%d", s->x);
      printf("%s", s->name); 
}

void main()
{
      extern int i;
      i=20;
      printf("%d", sizeof(i));
}

void main()
{
      char *p;
      p="Hello";
      printf("%c", *&*p);
}

#define clrscr() 100
void main()
{
      clrscr();
      printf("%d", clrscr());
}

void main()
{
      printf("%p", main);
}

void main()
{
      char string[]="Hello World";
      display(string);
}
void display(char *string)
{
      printf("%s", string);
}

void main()
{
      printf("\nab");
      printf("\bsi");
      printf("\rha");
}

void main()
{
      int i=10;
      i=!i>14;
      printf("i=%d", i);
}

void main()
{
      char far *farther, *farthest;
      printf("%d..%d", sizeof(farther), sizeof(farthest));
}

#define square(x) x*x
void main()
{
      int i;
      i = 64/square(4);
      printf("%d", i);
}

void main()
{
      char *p="hi friends", *p1;
      p1=p;
      while(*p!='\0') ++*p++;
      printf("%s", p1);
}

void main()
{
      int c = - -2;
      printf("c=%d", c);
}

#define int char
void main()
{
      int i = 65;
      printf("sizeof(i)=%d", sizeof(i));
}

void main()
{
      int i=3;
      switch(i)
      {
            default: printf("zero");
            case 1: printf("one"); break;
            case 2: printf("two"); break;
            case 3: printf("three"); break;
      }
}

void main()
{
      int i=1;
      while(i<=5)
      {
            printf("%d", i);
            if(i>2)
                  goto here;
            i++;
      }
}
fun()
{
      here:  printf("PP");
}

#include<stdio.h>
#define a 10
void main()
{
      #define a 50
      printf("%d", a);
}

void main()
{
      int i=5;
      printf("%d%d%d%d%d", i++, i--, ++i, --i, i);
}