C++第三次作业-续集

#include<iostream>
using namespace std;

int main()
{
int day = 1;
double s = 0.01, n = 0, m = 100000;
for (;day <= 30;)
{
n += s;
s *= 2;
day++;
}
m = m*30;
cout<<"一个月后百万富翁给了陌生人"<<n<<"元"<<endl
<<"一个月后陌生人给了百万富翁"<<m<<"元"<<endl;

return 0;
}

#include<iostream>
using namespace std;

int main()
{
int i, j, a;
for(i = 1; i <= 9; i++)
{
for(j = 1; j <= i; j++)
{
cout<<j<<"*"<<i<<"="<<i*j<<"\t";
}
}
return 0;
}

#include<iostream>
using namespace std;
int main()
{
int a,b,c,n=1;
for(a=0;a<=20;a++)
for(b=0;b<=33;b++)
{
c=100-a-b;
if(a*5+b*3+c/3.0==100)
{
cout<<"第"<<n<<"种方案:"
<<"鸡翁个数："<<a
<<"鸡母个数："<<b
<<"鸡雏个数："<<c<<endl;
n++;
}
};
return 0;
}

#include<iostream>
using namespace std;
int main()
{
long int a, b=0, c=1;
cout<<"请输入一个整数:";
cin>>a;
while(c>=1)
{
c=a/10;
b=b+1;
}
cout<<"这个整数是"<<b<<"位数"<<endl
<<"这个整数各个数依次为:";
int e,f,m=0;
while(a>0)
{
e=a%10;
b=b-1;
cout<<e<<"\t";
m+=e;
a=a/10;
};
cout<<endl
<<"这个整数各个数位上数字之和为:"<<m<<endl;

return 0;
}