Ytukyg

I am new to programming C and I don't know why my program is not printing the desired output.

#include <stdio.h>

void main(void)

{

  char res,res1;

 float money=10;



 printf("***Wealcome to Peace of Mind***");

 printf("nHello we have the menu please check::");

 printf("n***Menú***");

 printf("n");

 printf("n<<<Bebidas>>>");

 printf("n 1 - Coca-Cola = 1,5     2 - IceTea = 1,4");

 printf("n 3 - Super Bock = 1,70    4 - Sumol = 1,6");

 printf("n");

 scanf("%d",&res);

 switch(res)

 {

    case 1 || 'Coca-Cola':money - CocaCola;break;



 }

 printf("%.1f",money);



 //Is that result i want: 

    printf("n%.1f",10-1.5);

}

Output of my program:

The syntax of your case statement is not correct. Also the code is using scanf() to read an integer, but storing the integer-sized value in a char.

I tidied up the code:

#include <stdio.h>



int main(void)

{

    int  res;

    float cost  = 0;

    float money = 10;



    printf("***Wealcome to Peace of Mind***n");

    printf("Hello we have the menu please check::n");

    printf("***Menú***n");

    printf("n");

    printf("<<<Bebidas>>>n");

    printf(" 1 - Coca-Cola  = 1,5     2 - IceTea = 1,4n");

    printf(" 3 - Super Bock = 1,70    4 - Sumol  = 1,6n");

    printf("n");



    scanf("%d", &res);



    switch(res)

    {

        case 1:

           cost = 1.5;

           break;

        case 2:

           cost = 1.4;

           break;

        // TODO: case 3 & 4

        default:

           printf("Invalid Entryn");

           cost = 0;

    }



    printf("money = %.1fn", money - cost);



    return 0;

}

Some further notes:

• As commentators pointed out, put n at the end of the string


• When you compile, turn on warnings, and try to fix all of them.


• In case blocks, it's good practice to have a default to catch errors


• It would be worthwhile to store the drink prices as #define constants (or as an array of values, or some common area so the value is only set once in the program, and everything else just references that.)
  
  
  
  
  • 
    #define COLA_COST 1.5