URI Online Judge Solution | 1048 Salary Increase

My failed code:
http://ideone.com/4o96LX

My succeeded accepted code:

#include<iostream>
#include<cstdio>
using namespace std;

int main()
{
    double salin,salout,money,percent,val,multi;
    char ch='%';

    scanf("%lf",&salin);

    if(salin>=0 && salin<=400.00)
    {
        val=0.15;
    }
    else if(salin>=400.01 && salin<=800.00)
    {
        val=0.12;
    }
    else if(salin>=800.01 && salin<=1200.00)
    {
        val=0.1;
    }
    else if(salin>=1200.01 && salin<=2000.00)
    {
        val=0.07;
    }
    else
    {
        val=0.04;
    }

    money=salin*val;
    salout=salin+money;
    percent=val*100;

    printf("Novo salario: %.2lf\n",salout);
    printf("Reajuste ganho: %.2lf\n",money);
    printf("Em percentual: %.lf %c\n",percent,ch);

    return 0;
}