Ex8- សរសេរកម្មវិធី ដើម្បីគណនាការប្តូរប្រាក់ដែលមានមុខដូចមីនុយខាងក្រោមៈ

Menu:នៃការប្តូរប្រាក់
 
- 1 - Riel -> USD
- 2 – USD -> Riel
- 3 – Bath -> Riel
- 4 – Riel -> Bath
- 5 – Quit

Code
#include<stdio.h>

#include<conio.h>

void main()

{clrscr();

int done=0;

long rate,mon2chang;

float baland=0;

char c;

printf("1-Riel ->USD\n");

printf("2-USD  -Riel\n");

printf("3-Riel ->Bath\n");

printf("4-Bath ->Riel\n");

printf("Q:quit\n");

while (!done)

{

 c=getchar();

 switch (c)

 {

 case '1':

 printf("Input Money2Chang=");scanf("%ld",&mon2chang);

 printf("Input Rate=");scanf("%ld",&rate);

 baland=mon2chang/rate;

 printf("Baland=%.2f\n",baland);break;

 case '2':

 printf("Input Money2Chang=");scanf("%ld",&mon2chang);

 printf("Input Rate=");scanf("%ld",&rate);

 baland=mon2chang*rate;

 printf("Baland=%.2f\n",baland);break;

 case '3':

 printf("Input Money2Chang=");scanf("%ld",&mon2chang);

 printf("Input Rate=\n");scanf("%ld",&rate);

 baland=mon2chang/rate;

 printf("Baland=%.2f\n",baland);break;

 case '4':

 printf("Input Money2Chang=");scanf("%ld",&mon2chang);

 printf("Input Rate=");scanf("%ld",&rate);

 baland=mon2chang*rate;

 printf("Baland=%.2f\n",baland);break;

 case 'q':

 printf("\nQuit");done=1;break;

 }

}

getch();

}