CS 125 Final Review Part 1

stdio

100

The C library that contains the standard input and output functions

stdio

200

The C function that displays text to the screen

printf()

300

The C function that reads in user input

scanf

400

What will a be equal to (assume successful inputs):

int a = 1, b = 0, var1, var2;

b = scanf("%d %d", &var1, &var2);

a = b;

2

500

What will b be equal to if "test" was entered:

int  b = 0;

char a2[5];

b = scanf("%s", a2);

1

Variable Fun

100

How would you declare a integer called x that is equal to 5

int x = 5;

200

How would you declare 2 characters called x and y

char x , y;

300

What will print (assume successful inputs):

int a = 1, b = 0;

b = scanf("%d %d", &var1, &var2);

b=a;

printf("%d", b);

1

400

The operator used to shorthand addition

+=

500

Fill in the 3 blank lines to successfully swap the values of x and y

int x = 1, y = 2, z;

BLANK

BLANK

BLANK

printf("%d %d", x, y);

z = x;

x = y;

y = z;

Strings

100

How would you declare a string called name with a length of 5 that is not given an initial value.

char name[5];

200

The library for string functions

string.h

300

What will print if testing123 is entered:

char a2[5];

scanf("%s", a2);

printf("%s", a2);

testing123

DONT DO THIS!!!!!!

400

The function to copy n number of characters to the beginning of a string

strncpy()

500

What will print :

char a2[] = "cats";

printf("%d, %d ", strlen(a2), sizeof(a2));

4 , 5

Functions

100

The return type when not returning any data type

Void

200

A declaration that tells the compiler about a function's name, return type, and parameters before its actual definition 

Function prototype

300

How would you call this function:

int fun1(int var1);

fun1(int variable);

400

Fill in the blank

BLANK test(int x, int * y){

x = 3;

y = &x;

return y;

}

int *

500

Fill in the blank for the factorial recursive function

int multiplyNumbers(int n) {    

     if (n>=1)     

              BLANK    

    else      

               return 1; }

return n*multiplyNumbers(n-1);

Arrays

100

How do you declare an integer array of length 5 called numbers

int numbers[5];

200

What is arr[2]?

int arr[5] = {1,2,3,4,5};

3

300

What will print:

int arr[5] = {1,2,3,4,5};

printf("%d", sizeof(arr));

20

400

What will print:

int arr[7] = {1,2,3,4,5};

int arr [8] = 2;

printf("%d", sizeof(arr));

Error

500

How many 0 in this array?

int arr[2][8] = {1,0,3,4,5};

12