TCS NQT-2019 Practice Test(16th July 2019):1

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All are Multiple Choice Questions.

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CIV

EEE

ECE

CSE

Which of the below statements are true about C programming language. 1. main() function should always be the first function present in a C program file. 2. all the elements of an union share their memory location. 3. A void pointer can hold address of any type and can be type castes to any type. 4. A static variable hold random junk value if it is not initialized.

1 point

2, 3

1, 2

1, 2, 3

1, 2, 3, 4

Clear selection

The difference between variable declaration and variable definition is

1 point

Declaration and Definition are same. There is no difference.

A declaration is used for variables and definition is used for functions.

Declaration associates type to the variable whereas definition associates scope to the variable.

Declaration associates type to the variable whereas definition gives value to the variable.

Clear selection

Where the local variables are stored?

1 point

Disk

Stack

Heap

Queue

Clear selection

Select the missing statement.

1 point

printf(“%ll\n",fact(5));

printf("%u\n",fact(5));

printf("%d\n",fact(5));

printf("%ld\n",fact(5));

Clear selection

In C, if a function’s return type is not explicitly defined then it’s default to ______ type.

1 point

int

float

void

Error

Clear selection

For passing command line arguments the main function should be like _______

1 point

int main(char *argv[], int argc)

int main(int argc)

int main(char *argv[])

int main( int argc, char *argv[])

Clear selection

Which of the following is a User-defined data type?

1 point

long int

double

unsigned long int

enum

Clear selection

How can you make scanf() method accept Multi-Word Strings?

1 point

scanf("%s",str);

scanf("%s\n", str);

scanf("%[^\n]s", str);

scanf("%s%s%s",str);

Clear selection

What is the difference between ‘A’ and “A”?

1 point

'A' is a character constant and "A" is a string constant.

'A' is a variable and "A" is an identifier

'A' is a keyword and "A" is a label

None of the above

Clear selection

Is a default case is necessary in a switch statement?

1 point

Yes

Mandatory

Syntactically Incorrect if it is not specified.

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