1. Revision

2. Your programs should generally..
Have plenty of comments
Be uniform in style
Have good structure
Be simple, not bloated
Be universal (cover corner cases)
Be modular (easily reusable)
Effective (optimal algorithms)
Easily readable
2018
Risto Heinsar

3. Basic data types Data type Format Size Integers int %d 2 or 4 bytes
short %h
2 bytes
unsigned %u
Characters
char %c
1 byte
char[] %s
? byte(s)
Floating point
float %f
4 bytes
double
%lg
8 bytes
2018
Risto Heinsar

4. Loops while do while for
i = 0; while (i < 10) { printf("%d\n", i); i++; }
i = 0; do { printf("%d\n", i); i++; } while ( i < 10);
for (i = 0; i < 10; i++) { printf("%d\n", i); }
2018
Risto Heinsar

5. Functions and programm structure
#include <stdio.h>
void PrintDigit(int value); // function prototype
int main(void) //main() function with return type {
int digit;
scanf("%d", &digit);
PrintDigit(digit); // function call
return 0; // return value from main function }
void PrintDigit(int value)
printf("Number read was: %d\n", value);
2018
Risto Heinsar

6. Revision task 1 Initialize a string of Your choosing
Remove all of the vowels from that string. The resulting string must be written in a different variable, original must stay intact!
Output both the original and the modified string on the screen.
Create at least one function besides main in a meaningful way
2018
Risto Heinsar

7. Revision task 2 (use our code template)
The data is mixed type (both metric and imperial), stored in a single array. You can think of it as distance travelled by office workers during work hours in an international setting. One line per employee.
The second column of the array defines the units – 0 for metric, 1 for imperial. Data units are either meters or feet.
The output must be only given in metric units.
Output the distance walked by every employee
Output the following statistics: average distance walked, total distance walked
Create at least three functions besides main in a meaningful way
1 foot = meters
2018
Risto Heinsar

8. Revision task 3 Read N digits in between 0 ≤ ai ≤ 9
Find the frequency for each of the digits (rate of occurrence)
Output the digits with their frequencies
E.g. Number 0 occurred 1 time Number 1 occurred 12 times … Number 9 occurred 9 times
Output the basic statistics: Lowest and highest number entered, most common number(s)
Create at least three functions besides main in a meaningful way, one of which must return a non-void value
2018
Risto Heinsar