Exam overview

Reread my other post CS204, and keep on prayin.
Also read the DISCLAIMER!

Ze Exam

Section 1 MCQs

This section was Multiple Choice Questions.
??? is a choice that I forgot :')

Which of the following is NOT a logical operator?

• &
• &&
• ||
• !

Which of the following transfers control to the calling function?

• switch
• return
• goto
• ???
  Show Answer

  return

Which is best suidted to get strings that contain spaces from the users.

• scanf
• printf
• puts
• gets
  Show Answer

  gets

Performs operation then checks condition

• for
• do-while
• while
• ???
  Show Answer

  do-while

How many times does the following code repeat?

for (i=1; i <=10; i=i-1)

• Forever
• Never
• 1
• -
  Show Answer

  Forever

What is the order of operations in the following code?

z = x + y * z / 1 % 3 -2

• *%/-+=
• */%+-=
• =+*/%-
• -%/*+=
  Show Answer

  The second one

strcmp returns what when the string are equal?

• 1
• 0
• -1
• first string
  Show Answer

  0

Which of the following isn’t an arithmatic operation?

• !=
• /=
• +=
• %=
  Show Answer

  !=

Which of the following is NOT a correct use of pointers?

• int arr[i];
• int arr[] = {1, 2 3}
• int * char;
• int char
  Show Answer

  int char

What would you use add two string?

• strcon
• strcmp
• strcat
• stradd
  Show Answer

  strcat

Which of the following is the correct way to declare constants?

• #define a = b
• const char a 'b'
• const char a = 'b'
• const char
  Show Answer

  const char a = 'b'

How do you declare a function

• return-type func-name (argument type);
• return-type func-name (argument type){}
• return-type (argument type) func-name;
• ???
  Show Answer

  I am not sure if it is the one with ; or {}. Either first or second

How NOT to declare a 2D array?

• int a[3][] = {{1, 2, 3}, {5, 5, 6}, {6, 7, 8}}
• int a[][3] = {{1, 2, 3}, {5, 5, 6}, {6, 7, 8}}
• int a[1][3]
  Show Answer

  the first answer

What is the output of the following?

char str1[50];
char str1[] = "Hello World";

printf("%s\n", strcpy(str1 ,str2)):

• Hello
• Hello World
• Nothing
• Error
  Show Answer

  Not sure, I think ‘Hello World’

How do you declare a zero Array?

• int a[5] = {};
• int a[5];
• int a = 0, b = 0, c = 0;
int array[5] = {a, b, c}
• All of the Above
  Show Answer

  All of the Above

Section 2: Output of the program

Program 1:

What is the output of the following code?

#include <stdio.h>

int add(int a, int b);

int main(){
	int a = 10, b = 20, c;
	c = add(a, b);
	printf("c = %d\n", ++c);
}

int add(int a, int b){
	return (a + (++b);
}

Program 2

What is the output of the following code?

#include <stdio.h>

int main(){
	int a[5] = {1, 10, 5, 13, 40};
	int i, j, k, m;

	i = ++a[1];
	j = a[1]++;
	k = j++;
	m = a[k++];

	printf("%d %d %d %d", i, j, k, m);
}

Section 3: Correct The Errors

Program 1

#include <stdin.h>

int main(){
	int n,i;

	scanf("%f", &n);
	for(i=0; i < 10 + n, i++)
		printf("%d", n);
	return 0;
}

Program 2

Correct the program so that it prints “This number is odd” and “This number is even” for odd and even numbers, respectively.

#include <stdio.h>

int main(){
	int value;
	printf("Please input the number");
	scanf("%d", &value);
	
	switch (value/2){
		case 0: printf("This number is odd");
		case 1: printf("This number is even");
	}
	return 0;
}

Section 3: Code

Code for a triangle program

Code a program to validate a triangle, a valid triangle has all of its angles = 180.
Example output:

Please input 3 angles: 90 45 45
This triangle is valid

Please input 3 angles: 90 90 90 
This triangle is invalid

Code to find the sum of an array

Use pointers to find the sum of the following array by using a function named sum that does the sum.

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