C Basics 2

Which one is correct declaration of a variable-

• int number1;

• int number 1;

• int number1 number 2;

• int 123;

Number of keywords in C are?

• 30

• 32

• 31

• 33

Which one is right-

• int a = 10, b =5;

• int a = b;

• int a; b;

• int a, a;

which one is correct?

• int a, b;

  scanf("%d,%d",&a,&b);

• int a, b;

  scanf("%d%d",a,b);

• int a, b;

  scanf("%d%d",&a, &b);

• int a, b;

  scanf("Enter numbers %d %d", &a, &b);

Is both the statements are equivalent?

int a = 10, b = 20;

and

int b = 20, a = 10;

• Yes

• No

Is the following statement correct?

int a = b = c = 20;

• Yes

• No

Is the following statement correct?

int a, b, c;

a = b = c = 20;

• Yes

• No

Is the following statement correct?

int a = 10;

5 = a;

• Yes

• No

Which one is valid variable name?

• Number 2

• _Number

• 2Number

• int

Which one is correct?

• 3/2=1.5

• 3/2.0 = 1.5

• -5 % 2 = 1

• 5.5 % 2 = 1.5