select_function.c

Code:

#include <stdio.h>

#include <cs50.h>

// Prints my name several times.

void ShowMyName(void) {

for (int i = 0; i < 20; i++) {

printf("Anita Borg\n");

}

// Prints the numbers from 1 to 10, each on its own line.

void CountToTen(void) {

for (int n = 1; n <= 10; n++) {

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

}

// Prints a compact multipliation table from 1x1 to 9x9

void PrintMultiplicationTable(void) {

for (int a = 1; a < 10; a++) {

// Print the several multiplication facts for this row.

for (int b = 1; b < 10; b++) {

printf("%3d", a*b);

}

printf("\n"); // end the line

}

// Prompts the user for their choice of task, then does that task.

int main(void) {

printf("Select something for me to do:\n");

printf("\n");

printf("(1) Print 20 copies of the coder's name.\n");

printf("(2) Print the numbers from 1 to 10.\n");

printf("(3) Print a multiplication table.\n");

printf("\n");

printf("Your selection? ");

int selection = GetInt();

if (selection == 1) {

ShowMyName();

} else if (selection == 2) {

CountToTen();

} else if (selection == 3) {

PrintMultiplicationTable();

} else {

printf("Not a valid selection.\n");

}

Terminal Window:

$ make select_function

...

$ ./select_function

Select something for me to do:

(1) Print 20 copies of the coder's name.

(2) Print the numbers from 1 to 10.

(3) Print a multiplication table.

Your selection? 1

Anita Borg

$ ./select_function

Select something for me to do:

(1) Print 20 copies of the coder's name.

(2) Print the numbers from 1 to 10.

(3) Print a multiplication table.

Your selection? 2

$ ./select_function

Select something for me to do:

(1) Print 20 copies of the coder's name.

(2) Print the numbers from 1 to 10.

(3) Print a multiplication table.

Your selection? 3

1 2 3 4 5 6 7 8 9

2 4 6 8 10 12 14 16 18

3 6 9 12 15 18 21 24 27

4 8 12 16 20 24 28 32 36

5 10 15 20 25 30 35 40 45

6 12 18 24 30 36 42 48 54

7 14 21 28 35 42 49 56 63

8 16 24 32 40 48 56 64 72

9 18 27 36 45 54 63 72 81

$ ./select_function

Select something for me to do:

(1) Print 20 copies of the coder's name.

(2) Print the numbers from 1 to 10.

(3) Print a multiplication table.

Your selection? 4

Not a valid selection.