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Introduction to Computing – B142L

B142L Coursework assignment 1 – PRACTICE SAMPLE WITH SOLUTIONS

Academic year 2009/10


COURSEWORK DUE DATE

PRACTICE SAMPLE


COURSEWORK DESCRIPTION

Students are required to submit their coursework online using their individual coursework pages on the Mosaic website.

Answer all questions. This assessment has a total of 20 marks. Each question will be marked according to the following criteria:
MarksCriteria
5Source code uses an effective design to answer the question, compiles without errors and includes informative comments.
4Source code answers the question, compiles without errors and includes informative comments.
3Source code answers the question and compiles without errors.
2Source code is relevant to the question, but does not compile.
1Source code is incorrect or not relevant to the question.



COURSEWORK QUESTIONS – PRACTICE SAMPLE

QUESTION 1
[5 Marks]

Write a C program that accepts 10 input integers and displays a message that the sum of all numbers is odd or even.


QUESTION 2
[5 Marks]

In the same program as question 1, add a for loop to iterate through all 10 input integers and display messages that the number is greater than, lesser than or equal to 100.


QUESTION 3
[5 Marks]

In the same program as question 1, add a while loop to iterate through all 10 input integers and display the result of dividing each integer by 4.192 Display the output values using 2 decimal places of precision.


QUESTION 4
[5 Marks]

In the same program as question 1, add a function that accepts 2 input integers and returns the highest number plus one. Call this function twice in the program with different input numbers and display the return values. For example, if the input integers are 8 and 11, then the function would return 12.
#include <stdio.h>

int maxPlusOne( int, int );

int main( void )
{
   int numbers[ 10 ];
   int sum = 0;
   int counter;
   
   /* accept input integers and store them in an array */
   for ( counter = 0; counter < 10; counter++ )
   {
      scanf( "%d", &numbers[ counter] );
      sum = sum + numbers[ counter ]; /* calculate the sum of all inputs */
   }

   /* Required output for question 1 */   
   if ( ( sum % 2 ) == 0 ) printf( "Sum of inputs is even.\n" );
   else printf( "Sum of inputs is odd.\n" );

   /* Required output for question 2 */   
   for ( counter = 0; counter < 10; counter++ )
   {
      if ( numbers[ counter ] > 100 ) printf( "%d is greater than 100\n", numbers[ counter ] );
      else if ( numbers[ counter ] < 100 ) printf( "%d is less than 100\n", numbers[ counter ] );
      else printf( "%d is equal to 100\n", numbers[ counter ] );
   }

   /* Required output for question 3 */   
   counter = 0;
   while( counter < 10 )
   {
      printf( "%d divided by 4.192 is equal to %.2f\n", numbers[ counter ], numbers[ counter ] / 4.192 );
      counter++;
   }
   
   /* Requirement for question 4 */   
   printf( "%d\n", maxPlusOne( numbers[ 0 ], numbers[ 1 ] ) );
   printf( "%d\n", maxPlusOne( numbers[ 2 ], numbers[ 3 ] ) );
}

/* Requirement for question 4 */   
int maxPlusOne( int number1, int number2 )
{
   if ( number2 > number1 ) return ( number2 + 1 );
   else return ( number1 + 1 );
}