โจทย์
สร้างระบบโหวตเลือกตั้ง 3 หลักพร่อง ใช้ switch case เรียกฟังก์ชัน
ฟังก์ชันหลัก
- Cast vote - เลือกผู้สมัคร
- Find vote count - นับคะแนน แสดงผล
โปรแกรม
#include <stdio.h>
#define CANDIDATE_COUNT 3
#define CANDIDATE1 "ABC"
#define CANDIDATE2 "XYZ"
#define CANDIDATE3 "PQR"
int votescount1 = 0, votescount2 = 0, votescount3 = 0;
void castvote() {
int choice;
printf("\n### Please choose your Candidate ###\n");
printf("\n1. %s", CANDIDATE1);
printf("\n2. %s", CANDIDATE2);
printf("\n3. %s", CANDIDATE3);
printf("\n4. None of These");
printf("\nInput your choice (1-4): ");
scanf("%d", &choice);
switch (choice) {
case 1: votescount1++; break;
case 2: votescount2++; break;
case 3: votescount3++; break;
default: printf("\nError: Wrong Choice!! Please retry");
}
printf("\nThanks for vote!!");
}
void votesCount() {
printf("\n##### Voting Statistics ####");
printf("\n%s - %d", CANDIDATE1, votescount1);
printf("\n%s - %d", CANDIDATE2, votescount2);
printf("\n%s - %d", CANDIDATE3, votescount3);
}
int main() {
int choice;
do {
printf("\n###### Welcome to Election/Voting 2019 #####");
printf("\n1. Cast the Vote");
printf("\n2. Find Vote Count");
printf("\n0. Exit");
printf("\nPlease enter your choice: ");
scanf("%d", &choice);
switch (choice) {
case 1: castvote(); break;
case 2: votesCount(); break;
default: printf("\nError: Invalid Choice");
}
} while (choice != 0);
return 0;
}
ผลลัพธ์ตัวอย่าง
###### Welcome to Election/Voting 2019 #####
1. Cast the Vote
2. Find Vote Count
0. Exit
Please enter your choice: 1
### Please choose your Candidate ####
1. ABC
2. XYZ
3. PQR
4. None of These
Input your choice (1-4): 1
Thanks for vote!!
...
##### Voting Statistics ####
ABC - 2
XYZ - 0
PQR - 0
