CODEWITHSUNDEEP
cfor-loopif-statement
Kakarotto
Kakarotto

Reputation: 65

How to jump back to the top of the code after if statement C language

I'm trying to make my program to start again from the beginning after user has selected an option from a menu. When the user selects 1 and then enters the amount of the donation I want the program to start again and show the menu What would you like to do? and not to just restart just the if statement.

Should I add a for loop inside of the if statement to accomplish this? thanks for the help.

 printf("What would you like to do?\n");
    printf("      1 - Donate\n");
    printf("      2 - Invest\n");
    printf("      3 - Print balance\n");
    printf("      4 - Exit\n");
    printf("\n");

    //scans menu choice
    scanf("%d", &menu_option);

    if(menu_option==1)
    {
    printf("How much do you want to donate?\n");
    scanf("%lf", &donation);
    donations_made++;
    current_Balance = initial_Balance + donation;
    }

Upvotes: 0

Views: 1089

Answers (2)

bruno
bruno

Reputation: 32586

When the user selects 1 and then enters the amount of the donation I want the program to start again and show the menu

just do

for(;;) {
  printf("      1 - Donate\n");
  printf("      2 - Invest\n");
  printf("      3 - Print balance\n");
  printf("      4 - Exit\n");
  printf("\n");

  //scans menu choice
  scanf("%d", &menu_option);

  if(menu_option==1)
  {
    printf("How much do you want to donate?\n");
    scanf("%lf", &donation);
    donations_made++;
    current_Balance = initial_Balance + donation;
    // NO BREAK
  }
  else {
    .... management of other cases
    break;
  }
}

or if you prefer

do {
  printf("      1 - Donate\n");
  printf("      2 - Invest\n");
  printf("      3 - Print balance\n");
  printf("      4 - Exit\n");
  printf("\n");

  //scans menu choice
  scanf("%d", &menu_option);

  if(menu_option==1)
  {
    printf("How much do you want to donate?\n");
    scanf("%lf", &donation);
    donations_made++;
    current_Balance = initial_Balance + donation;
  }
  // ... management of other cases
} while (menu_option==1);

But are you sure you do not want to redo also in cases 2 and 3 ? In that case replace while (menu_option==1); by while (menu_option != 4); or in the first proposal do the break only when menu_option is 4

I also encourage you to check the return value of scanf("%d", &menu_option); to be sure a valid integer was given in input and menu_option was set

Upvotes: 1

pifor
pifor

Reputation: 7882

#include <stdio.h>

int main()

{
 int menu_option;
 double donation;
 int donations_made = 0;
 int current_Balance = 0;
 int initial_Balance = 0;

 for (;;)
 {

    printf("What would you like to do?\n");
    printf("      1 - Donate\n");
    printf("      2 - Invest\n");
    printf("      3 - Print balance\n");
    printf("      4 - Exit\n");
    printf("\n");

    //scans menu choice
    scanf("%d", &menu_option);

            if (menu_option==1)
            {
                   printf("How much do you want to donate?\n");
                   scanf("%lf", &donation);
                   donations_made++;
                   current_Balance = initial_Balance + donation;
             }
        else if (menu_option == 4)
                 break;

   }
}

Upvotes: 0

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