C How To Program - Chapt 2

Front 1

In a C program, how are comments indicated?

Back 1

You can use the following

/* Comment Here */

or

// Comment here

Front 2

Is the following a valid comment string from a C program:

/* indicates the program end /*

Back 2

No the the end of the comment should be */

Front 3

How are lines in a C program that are going to be processed by the preprocessor indicated?

Back 3

Lines that begin with a #

Front 4

What does the following line of C code do:

#include <stdio.h>

Back 4

Its a directive to the C preprocessor to include the contents of the standard input/standard output header in the program

Front 5

A C program can contain many functions, one of which must be ___________

Back 5

main

Front 6

In C, how do you begin and end each function?

Back 6

With the left and right braces
{ }

Front 7

In C, a statement ends with a semicolon (;). What is the term for the semicolon?

Back 7

statement terminator

Front 8

What does the following C statement do:

printf( "Welcome to C!\n" );

Back 8

It will print Welcome to C! and move the cursor to the next line.

Front 9

Describe the following escape sequences:

\n
\t
\a
\\
\"

Back 9

\n - Newline, moves the cursor to the beginning of the next line

\t - Horizontal tab

\a - Alert, sounds a system bell

\\ - backslash, insters a backlash character into a string

\" - Double Quotes, insterts double quotes into a string

Front 10

When C program needs to make a "call" for a library function, such as printf, what knows where to find the library?

Back 10

the linker

Front 11

Find the mistake in the following C program:

#include <stdio.h>

int main(void)
printf( "Hello world!/n")

return 0;
}

Back 11

Its missing the left brace { before the beginning of the body and missing a semicolon ; at the end of the print statement.

Front 12

Describe what a variable is:

Back 12

A variable is a location in memory where a value can be stored for use by a program

Front 13

Given the following line of code, the variable is of what type:

int a;

Back 13

a is an integer

Front 14

What occurs when the compiler cannot recognize a statement?

Back 14

syntax error

Front 15

What is the function scanf used for?

Back 15

reads standard input to obtain a value from the user

Front 16

Given the following statement, which is the format control string?

scanf( "%d", &integer1 );

Back 16

%d

it indicats the type of data that should be input by the user

Front 17

What is the purpose of the ampersand in the following statement:

scanf( "%d", &integer1 );

Back 17

The amperasand (&) is called the address operator and provides scanf with the location in memory to store the data entered by the user

Front 18

What is happening in the following C statement:

sum = integer1 + integer2;

Back 18

the variable sum is being given the value of integer1 and integer2 added together

Front 19

Given the following printf statement, what be the value printed to the screen for %d:

printf( "Sum is %d\n", integer1 + integer2 );

Back 19

%d would be the whatever the sum of integer1 and integer2 is

Front 20

Given the following C program what will be the value of i when it is printed

#include <stdio.h>

int main(void)
{
int i = 0;
int a = 5;
int b = 10;

i = (a * a) + b;

printf ( "%d\n", i);

return 0;
}

Back 20

35

Front 21

Given the following C program what will be the value of i when it is printed

int main(void)
{
int i = 0;
int a = 5;
int b = 10;

i = a * a + b / a;

printf ( "%d\n", i);

return 0;
}

Back 21

27

Front 22

Given the following C program what will be the value of i when it is printed

int main(void)
{
int i = 0;
int a = 5;
int b = 17;

i = b % a;

printf ( "%d\n", i);

return 0;
}

Back 22

2