企业发放的奖金根据利润提成。利润I低于或等于100000元的，奖金可提0.1；利润高于100000元，低于200000（100000<I<=200000）时，低于100000元的部分按10%提成，高于100000元的部分，可提成7.5%；200000<I<=400000时，低于200000元的部分仍按上述办法提成（下同）。高于200000元的部分按5%提成；400000<I<=600000元时，高于400000元的部分按3%提成；600000<I<=1000000时，高于600000元的部分按1.5%提成；I>1000000时，超过1000000元的部分按1%提成。从键盘输入当月利润I，求应发奖金总数。
要求：
（1）用if语句编程序；
（2）用switch语句编程序。
1 include<iostream> 2 using namespace std; 3 int main() 4 { 5 int opt; 6 float profit; 7 cout<<"please choose the mode: 1[if]/2[switch] "; 8 cin>>opt; 9 switch(opt) 10 { 11 case 1: 12 { 13 cout<<"MODE "if" chosen "; 14 cout<<"please enter monthly profit($):"; 15 cin>>profit; 16 float sum; 17 if(profit<=1e5) 18 {sum=profit*0.1;} 19 else if(profit<=2e5) 20 {sum=1e5*0.1+(profit-1e5)*0.075;} 21 else if(profit<=4e5) 22 {sum=1e5*0.1+1e5*0.075+(profit-2e5)*0.05;} 23 else if(profit<=6e5) 24 {sum=1e5*0.1+1e5*0.075+2e5*0.05+(profit-4e5)*0.03;} 25 else if(profit<=1e6) 26 {sum=1e5*0.1+1e5*0.075+2e5*0.05+2e5*0.03+(profit-6e5)*0.015;} 27 else 28 {sum=1e5*0.1+1e5*0.075+2e5*0.05+2e5*0.03+4e5*0.015+(profit-1e6)*0.01;} 29 cout<<"your bonus is: "<<sum<<'$'<<endl; 30 };break; 31 case 2: 32 { 33 cout<<"MODE "switch" chosen "; 34 cout<<"please enter monthly profit($):"; 35 cin>>profit; 36 float sum; 37 switch(int(profit/1e5)) 38 { 39 case 0: 40 {sum=profit*0.1;};break; 41 case 1: 42 {sum=1e5*0.1+(profit-1e5)*0.075;};break; 43 case 2: 44 {sum=1e5*0.1+1e5*0.075+(profit-2e5)*0.05;}; 45 case 3: 46 break; 47 case 4: 48 case 5: 49 {sum=1e5*0.1+1e5*0.075+2e5*0.05+(profit-4e5)*0.03;};break; 50 case 6: 51 case 7: 52 case 8: 53 case 9: 54 {sum=1e5*0.1+1e5*0.075+2e5*0.05+2e5*0.03+(profit-6e5)*0.015;};break; 55 default : 56 {sum=1e5*0.1+1e5*0.075+2e5*0.05+2e5*0.03+4e5*0.015+(profit-1e6)*0.01;};break; 57 } 58 cout<<"your bonus is: "<<sum<<'$'<<endl; 59 };break; 60 } 61 62 return 0; 63 }