#include<stdio.h>
void main()
{
    float pdz,pricepermg,nwprice,d,f;
    int nomg;
    printf("price of dozen");
    if(scanf("%f",&pdz)==1)
    {    
        printf("enter the number of mango");
        if(scanf("%d",&nomg)==1)
        {
            pricepermg=pdz/12;
            nwprice=pricepermg*nomg;
            printf("price= %d\n mango=%o.2f",nomg,nwprice);
        }
        else
        {
        printf("enter correct value");
        }
    }
    else
    {
    printf("Enter the correct value");
    }
}

================================OUTPUT===================================
price of dozen :23
enter the number of mango :23
price= 23
mango=44.08


price of dozen :12
enter the number of mango :45
price= 45
mango=45.00