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- #include<stdio.h>
- void sms();
- void call();
- void topup();
- void logo();
- void main()
- {
- logo();
- }
- void logo()
- {
- printf("[1] Call, [2] SMS, [3] TOP UP, [4] EXIT ? ");
- scanf("%d", &choose);
- if(choose == 1)
- {
- printf("\nYou Have Choosen %s\n", "CALL");
- call();
- }
- else
- {
- }
- if(choose == 2)
- {
- printf("\nYou Have Choosen %s\n", "SMS");
- sms();
- }
- else
- {
- }
- if(choose == 3)
- {
- printf("\nYou Have Choosen %s\n", "TOP UP");
- topup();
- }
- else
- {
- }
- if(choose == 4)
- {
- printf("\nYou Have Choosen %s\n", "EXIT");
- logo();
- }
- else
- {
- }
- }
- void call()
- {
- double balance = 10.0, call_duration, new_balance;
- printf("The Prepaid Balance = %.2lf\n", balance);
- printf("Call Duration(minutes) : ");
- scanf("%f", &call_duration);
- new_balance = balance - (call_duration * 0.50);
- printf("Your new balance = %.2lf", new_balance);
- }
- void sms()
- printf("The Prepaid Balance = %.2lf\n", new_balance);