#include<stdio.h>
int main()
{
    int floating,i;                       
    double num,num1,num2;
    char var;
    
    floating=0;
    i=0;
    num=0;
    num1=0;
    num2=0;

    printf("enter the floating point number\n");
    scanf("%c",&var);
 
    while(var != '!')
    {
        if ((var < '0' || var > '9') && var != ',')
                printf("\n wrong input\n");
        else if (var== ',')
                floating = 1;
        else if(floating ==0)
                num1=10*num1 + (var - '0');
        else if(floating ==1)
        {
                num2=10*num2+ (var - '0');
                i++;
        }
        scanf("%c",&var);
    }

    while(i!=0)
    {
        num2=num2/10;
        i--;
    }

    num=num1+num2;

    printf("number is: %lf\n",num);
    return 0;
}