Q1) What is the output displayed by the below Program?

#include <stdio.h>
int main(void)
{
   int ch;
   scanf("%d",&ch);
   switch(ch,ch+1)
   {
           case 1:
                   printf("1");
                   break;
           case 2:
                   printf("2");
                   break;
           default:
                   printf("3");
                   break;
   }
   return 0;
}

Q2) What is the output displayed by the below Program?

#include <stdio.h>
int main(void)
{
   int i=5,j=7;
   if(i+j>5)
   {
        j=i+2;
        if(j<5)
        {
            printf("%d",i);
        }
        else
        {
            printf("%d",j);
        }
   }
   else
   {
        printf("%d",i+1);
   }
   return 0;
}

Q3) What will be the output if the folowing numbers are given as input to number 122,567,789,543,536,999.

#include <stdio.h>
int main(void)
{
   float s=0,c=0,a=0,number;
   scanf("%f",&number);
   while(number!=999)
   {
           s=s+number;
           c=c+1;
           scanf("%f",&number);
   }
   a=s/c;
   printf("%f",a);
   return 0;
}

Q4) What will be the output if the value 2030 is given input to n?

#include <stdio.h>
int main(void)
{
   int n,ec=0,nr,d;
   scanf("%d",&n);
   nr=n;
   while(nr)
   {
           d=nr%10;
           if(d!=0)
                   ec++;
           nr=nr/10;
   }
   printf("%d",ec);

   return 0;
}

Q5) What is the output displayed by the below program?

#include <stdio.h>
int main(void)
{
   int n,i;
   scanf("%d",&n);
   for(i=0;i<n;i++)
   {
           printf("%d",i);
           i--;
   }

   return 0;
}

Q6) What is the output displayed by the below program?

#include <stdio.h>
int main(void)
{
   int i=0,j;
   while(i<2)
   {
           j=0;
           while(j<=3*i)
           {
                   printf("%d",j);
                   printf(" ");
                   j=j+3;
           }
           printf("\n");
           i=i+1;
   }

   return 0;
}

Q7) What is the output displayed by the below program if num is given value 256?

#include <stdio.h>
int main(void)
{
   int count=0,num;
   scanf("%d",&num);
   while(num)
   {
           count++;
           num>>=1;
   }
   printf("%d",count);

   return 0;
}

Q8) consider the following c code . Assume unsigned long int is 64 bit.
The value print by the above code with n value given as 2power40?

int main()
{
	unsigned long int i,j=0,sum=0,n;
	for(i=n;i>1;i=i/2) j++;
	for( ;j>1;j=j/2) sum++;
	printf(“%d”,sum);
}

Q9) What is the output displayed by the below program?

#include <stdio.h>
int main(void)
{
   float sum=0.0,j=1.0,i=2.0;
   while(i/j>0.0625)
   {
           j=j+j;
           sum=sum+i/j;
           printf("%f",sum);
   }


   return 0;
}

Q10) What is the output displayed by the below program?

#include <stdio.h>
int main(void)
{
   int a,b,c,d=6;
   for(a=1;a<=2;a++)
   {
           for(b=a;b<=2;b++)
           {
                   for(c=b;c<=2;c++)
                           printf("%d",d);
           }
   }

   return 0;
}