Working on some basic work for college need a little help in getting a number pad to recognize the numbers when pressed on a key pad, The code below is for an ardunio board but its based on C, Can anyone help?

// Pins //
#define SegA 6 // A
#define SegB 15 // B
#define SegC 7 // C
#define SegD 14 // D
#define SegE 8 // E
#define SegF 10 // F
#define SegG 9 // G

// ports //
#define PortA 18 // 1
#define PortB 3 // 2
#define PortC 19 // 3
#define PortD 2 // 4

void setup() {
pinMode(SegA, OUTPUT); 
pinMode(SegB, OUTPUT);
pinMode(SegC, OUTPUT);
pinMode(SegD, OUTPUT);
pinMode(SegE, OUTPUT);
pinMode(SegF, OUTPUT); 
pinMode(SegG, OUTPUT);

// ports //
pinMode(PortA, OUTPUT);
pinMode(PortB, OUTPUT);
pinMode(PortC, OUTPUT);
pinMode(PortD, OUTPUT);

}
void loop() {
// Transistor switches // LEFT
digitalWrite(PortA, LOW); // Seg 1
digitalWrite(PortB, LOW);  // SEG 2
digitalWrite(PortC, LOW); // SEG 3
digitalWrite(PortD, HIGH); // SEG 4

// 0 //
digitalWrite(SegA, HIGH);  // A
digitalWrite(SegB, HIGH); // B
digitalWrite(SegC, HIGH);  // C
digitalWrite(SegD, HIGH); // D
digitalWrite(SegE, HIGH); // E
digitalWrite(SegF, HIGH); // F
digitalWrite(SegG, LOW); // G
delay (1000);
  
// 1 //
digitalWrite(SegA, LOW);  // A
digitalWrite(SegB, HIGH); // B
digitalWrite(SegC, HIGH);  // C
digitalWrite(SegD, LOW); // D
digitalWrite(SegE, LOW); // E
digitalWrite(SegF, LOW); // F
digitalWrite(SegG, LOW); // G
delay (1000);

// 2 //
digitalWrite(SegA, HIGH);  // A
digitalWrite(SegB, HIGH); // B
digitalWrite(SegC, LOW);  // C
digitalWrite(SegD, HIGH); // D
digitalWrite(SegE, HIGH); // E
digitalWrite(SegF, LOW); // F
digitalWrite(SegG, HIGH); // G
delay (1000);

// 3 //
digitalWrite(SegA, HIGH);  // A
digitalWrite(SegB, HIGH); // B
digitalWrite(SegC, HIGH);  // C
digitalWrite(SegD, HIGH); // D
digitalWrite(SegE, LOW); // E
digitalWrite(SegF, LOW); // F
digitalWrite(SegG, HIGH); // G
delay (1000);

// 4 //
digitalWrite(SegA, LOW);  // A
digitalWrite(SegB, HIGH); // B
digitalWrite(SegC, HIGH);  // C
digitalWrite(SegD, LOW); // D
digitalWrite(SegE, LOW); // E
digitalWrite(SegF, HIGH); // F
digitalWrite(SegG, HIGH); // G
delay (1000);

// 5 //
digitalWrite(SegA, HIGH);  // A
digitalWrite(SegB, LOW); // B
digitalWrite(SegC, HIGH);  // C
digitalWrite(SegD, HIGH); // D
digitalWrite(SegE, LOW); // E
digitalWrite(SegF, HIGH); // F
digitalWrite(SegG, HIGH); // G
delay (1000);

// 6 //
digitalWrite(SegA, LOW);  // A
digitalWrite(SegB, LOW); // B
digitalWrite(SegC, HIGH);  // C
digitalWrite(SegD, HIGH); // D
digitalWrite(SegE, HIGH); // E
digitalWrite(SegF, HIGH); // F
digitalWrite(SegG, HIGH); // G
delay (1000);

// 7 //
digitalWrite(SegA, HIGH);  // A
digitalWrite(SegB, HIGH); // B
digitalWrite(SegC, HIGH);  // C
digitalWrite(SegD, LOW); // D
digitalWrite(SegE, LOW); // E
digitalWrite(SegF, LOW); // F
digitalWrite(SegG, LOW); // G
delay (1000);

// 8 //
digitalWrite(SegA, HIGH);  // A
digitalWrite(SegB, HIGH); // B
digitalWrite(SegC, HIGH);  // C
digitalWrite(SegD, HIGH); // D
digitalWrite(SegE, HIGH); // E
digitalWrite(SegF, HIGH); // F
digitalWrite(SegG, HIGH); // G
delay (1000);

// 9 //
digitalWrite(SegA, HIGH);  // A
digitalWrite(SegB, HIGH); // B
digitalWrite(SegC, HIGH);  // C
digitalWrite(SegD, HIGH); // D
digitalWrite(SegE, LOW); // E
digitalWrite(SegF, HIGH); // F
digitalWrite(SegG, HIGH); // G
delay (1000);
}

Sketch it in Arduino IDE

Here's an example:

#include <Keypad.h>

const byte ROWS = 4; //four rows
const byte COLS = 3; //three columns
char keys[ROWS][COLS] = {
{'1','2','3'},
{'4','5','6'},
{'7','8','9'},
{'#','0','*'}
};
byte rowPins[ROWS] = {5, 4, 3, 2}; //connect to the row pinouts of the keypad
byte colPins[COLS] = {8, 7, 6}; //connect to the column pinouts of the keypad

Keypad keypad = Keypad( makeKeymap(keys), rowPins, colPins, ROWS, COLS );

void setup(){
Serial.begin(9600);
}

void loop(){
char key = keypad.getKey();

if (key != NO_KEY){
Serial.println(key);
}
}



The example above is taken from Keypad Library for Arduino - keypad tutorial. Here's the link: http://arduino.cc/playground/Code/Keypad