Unit - 4 MCQ Test - CO11

What vlaue is stored in x? X = scanf("%d %d", &a, &b);

• 1
• 2
• 3
• No value assigned

What is the purpose of function declaration in C?

• To hide the function from the compiler

• To confuse the programmer

• To inform the compiler about the function's name, return type, and parameters before its actual definition.

• To increase the program's efficiency

The parameters used in a function definition are also called as __________

• Actual Arguments
• Formal Arguments
• Simple Arguments
• Simple Parameters

The arguments used in a function call are also called as __________

• Actual Arguments
• Formal Arguments
• Simple Arguments
• Simple Parameters

A function which calls itself is called a ___ function.

• Self Function

• Auto Function

• Recursive Function

• Static Function

What is the lifetime of global variables?

• They exist throughout the entire program’s execution.

• They are destroyed when the function exits.

• They are limited to the block they are declared in.

• They can only be accessed by the main function.

What is the scope of a variable?

• The region of the program where it can be accessed.

• The type of data it can hold.

• The number of times it can be used.

• The time it takes to execute.

What will be the output of the following program

main()

{

int a=4;

change(a);

printf(“%d”,a);

}

change(int a)

{

printf(“%d”,++a);

} outputs

• 5 5

• 4 5

• 5 4

• 4 4

Which character is used to terminate string ?

• 0

• \0

• end

• EOF

what is output of following program ?

void main()

{ char str1 [10]= "RC"; printf("%d",strlen(str1)); }

• 10

• 11

• 2

• 3