Week 2 Quiz

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Week 2 Quiz

Basic Code Syntax

Preprocessor directives are statements that are executed before compilation of our actual code begins. Which of the following is regarded as a preprocessor directive?

#define MAX_LEN 10

int main(void)

int x = 5 + 3;

return 0;

Clear selection

Which of the following functions is the appropriate function for writing our C code in?

printf function

scanf function

main function

sqrt function

Clear selection

For code written in our functions, we introduce a symbol at the end of each line to allow the compiler to discern between different lines of code. Which of the following is the correct symbol?

(void)

;

Clear selection

What will happen to my compiled program if there are syntax errors with the source code?

Nothing happens. Code with syntax errors will be skipped over during execution.

Program will stop running unexpectedly when the first line of code with the syntax error is executed

Program will finish running first, then report that syntax errors exist

The question is wrong. Programs with syntax errors cannot be compiled

Clear selection

What will happen to my compiled program if there are run-time errors with the source code?

Nothing happens. Code with run-time errors will be skipped over during execution.

Program will stop running unexpectedly when the first line of code with the run-time error is executed

Program will finish running first, then report that run-time errors exist

The question is wrong. Programs with run-time errors cannot be compiled

Clear selection

On Page 17, we revisit the general pattern of an algorithm - input, compute and output. scanf and printf are functions quoted to perform input and output respectively. Which preprocessor directive (or to be more precise, the header file) is required for scanf and printf to work?

stdio.h

math.h

codecrunch.h

time.h

Clear selection

In scanf related statements, the "&" symbol is placed next to the variable which will take in the input. What does "&" combined with the variable name stand for?

Value of the variable

Data type of the variable

Address of the variable

Byte amount of the variable

Clear selection

In both printf and scanf related statements, format specifiers such as "%d" are used. For what data type does "%d" correspond to?

int

char

float

double

Clear selection

Image 1

In Image 1, the specifier "%d" is used in a printf statement. What is it used for?

It is the same as normal text just like the rest of the sentence.

It is to link the value of max (9001) to replace "%d" in the sentence

It is to link the data type of max (9001) to replace "%d" in the sentence

It is to link the address of max (9001) to replace "%d" in the sentence

Clear selection

On page 11, we see the newline character being used. What does this newline character actually do?

Creates a new empty line within your code

Moves your output cursor to a new line

Adds "\n" to my printf output

CodeCrunch will give me full marks only if I add this to my printf

Clear selection

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