Control Structures MCQs

What will be the output of the following C code? (Assuming that we have entered the value 1 in the standard input)

#include <stdio.h>
void main()
{
    char *ch;
    printf("enter a value between 1 to 3:");
    scanf("%s", ch);
    switch (ch)
    {
       case "1":
          printf("1");
          break;
       case "2":
          printf("2");
          break;
    }
}

What will be the output of the following C code?

#include <stdio.h>
void main()
{
    int i = 0;
    while (i < 10)
    {
        i++;
        printf("hi\n");
        while (i < 8) 
        {
            i++;
            printf("hello\n");
        }
    }
}

What will be the output of the following C code?

#include <stdio.h>
void main()
{
    int i = 0;
    while (++i)
    {
        printf("H");
    }
}

What will be the output of the following C code?

#include <stdio.h>
void main()
{
    double k = 0;
    for (k = 0.0; k < 3.0; k++);
        printf("%lf", k);
}

What will be the output of the following C code? (Assuming that we have entered the value 1 in the standard input)

#include <stdio.h>
void main()
{
    int ch;
    printf("enter a value between 1 to 2:");
    scanf("%d", &ch);
    switch (ch)
    {
       case 1:
          printf("1\n");
       default:
          printf("2\n");
    }
}

What will be the output of the following C code?

#include <stdio.h>
int main()
{
    int a = 1;
    switch (a)
    {
       case a:
          printf("Case A ");
       default:
          printf("Default");
    }
}

What will be the output of the following C code?

#include <stdio.h>
void main()
{
    int i = 2;
    do
    {
        printf("Hi");
    } while (i < 2)
}

The C code 'for(;;)' represents an infinite loop. It can be terminated by . . . . . . . .

What will be the output of the following C code?

#include <stdio.h>
int main()
{
    int i = 0;
    for (i++; i == 1; i = 2)
        printf("In for loop ");
        printf("After loop\n");
}