#include <cstdio>
#include<iostream>

using namespace std;

int main()
{
    double a,b;
    cin>>a;
    if(a<=400)b=0.15;
    else if (a>400 &&a<=800) b=0.12;
    else if (a>800 &&a<=1200) b=0.1;
    else if(a>1200 && a<=2000) b=0.07;
    else b=0.04;
    printf("Novo salario: %.2lf\n",a*(1+b));
    printf("Reajuste ganho: %.2lf\n",a*b);
    printf("Em percentual: %.0lf %%",100*b);
}

在c语言中，有一些特殊字符，本身就被定义了特殊的含义。所以，当需要输出这个字符时，需要加上”",成为转义字符。

常见转义字符：
输出%： %%

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