C # is a great god save the children's mid-term exam

CodePudding user response:

The first question:

 
Int studentCount=0; 
Int menCount=0; 
Int womenCount=0; 

@ Total: 
Console. WriteLine (" please enter the total number of class: "); 
Var result=Console. ReadLine (); 
if (! Int. J TryParse (result, out studentCount)) 
{
Console. WriteLine (" the number of input error, please enter an integer!" ); 
Goto @ Total; 
} 

@ Men: 
Console. WriteLine (" please enter the number of boys: "); 
Result=Console. ReadLine (); 
if (! Int. J TryParse (result, out menCount)) 
{
Console. WriteLine (" boy number: input error, please enter an integer!" ); 
Goto @ Men; 
} 

@ "WoMen: 
Console. WriteLine (" please enter the number of girls: "); 
Result=Console. ReadLine (); 
if (! Int. J TryParse (result, out womenCount)) 
{
Console. WriteLine (" girls: input error, please enter an integer!" ); 
Goto @ "WoMen; 
} 

Var stuArr=new List (a); 
for (int i=0; I & lt; MenCount; I++) 
{
StuArr. Add (" M "); 
} 

for (int i=0; I & lt; WomenCount; I++) 
{
StuArr. Add (" F "); 
} 

Console. WriteLine (" the number of boys is: "+ stuArr. The.findall (p=& gt; P=="M"). The Count); 
Console. WriteLine (" girls is: "+ stuArr. The.findall (p=& gt; P=="F"). The Count); 

CodePudding user response:

The second question:

 
A decimal l=0.00 m; 
A decimal r=0.00 m; 
@ GetNum: 
Console. WriteLine (" please enter the first number: "); 
Var result=Console. ReadLine (); 
if (! A decimal. TryParse (result, out l)) 
{
Console. WriteLine (" input error, please enter a valid number!" ); 
Goto @ GetNum; 
} 

@ GetNum2: 
Console. WriteLine (" please enter the second number: "); 
Result=Console. ReadLine (); 
if (! A decimal. TryParse (result, out r)) 
{
Console. WriteLine (" input error, please enter a valid number!" ); 
Goto @ GetNum2; 
} 


@ Sym: 
Var symNum=0; 
Console. WriteLine (" please input to the operation method of (1=2=3=except for) : "); 
Result=Console. ReadLine (); 
if (! Int. J TryParse (result, out symNum)) 
{
Console. WriteLine (" input error, please enter a valid integer!" ); 
Goto @ Sym; 
} 

The switch (symNum) 
{
Case 1: 
Result=Add (l, r); 
break; 
Case 2: 
Result=Sub (l, r); 
break; 
Case 3: 
Result=Ride (l, r); 
break; 
Default: 
Console. WriteLine (" input error, please enter a valid integer!" ); 
Goto @ Sym; 
} 

Console. WriteLine (" result is: "+ result); 

CodePudding user response:

 
Class Program 
{
The static void Main (string [] args) 
{
Operator oper=OperatorFactory. CreateOperator (5, 4, OperatorEnum. I.e.); 
Console. WriteLine (oper. GetResult (). The ToString ()); 
Console.ReadKey(); 
} 
} 

///& lt; Summary> 
///operation class 
///& lt;/summary> 
Public class Operator 
{
///& lt; Summary> 
///the first digit 
///& lt;/summary> 
Public int Num1 {get; set; } 

///& lt; Summary> 
The second digit///
///& lt;/summary> 
Public int Num2 {get; set; } 

///& lt; Summary> 
///to get result 
///& lt;/summary> 
///& lt; Returns>  
Public virtual int GetResult () 
{
return 0; 
} 
} 

///& lt; Summary> 
///addition 
///& lt;/summary> 
Public class OperatorAdd: Operator 
{
Public override int GetResult () 
{
Return this.. This Num1 + Num2; 
} 
} 

///& lt; Summary> 
///subtraction 
///& lt;/summary> 
Public class OperatorSub: Operator 
{
Public override int GetResult () 
{
Return this. Num1 - this. Num2; 
} 
} 

///& lt; Summary> 
///multiplication 
///& lt;/summary> 
Public class OperatorMul: Operator 
{
Public override int GetResult () 
{
Return this. Num1. * this Num2; 
} 
} 

///& lt; Summary> 
///algorithms factory 
///& lt;/summary> 
Public class OperatorFactory 
{
Public static Operator CreateOperator (int num1, int num2, OperatorEnum oper) 
{
Operator opera=null; 
The switch (oper) 
{
Case OperatorEnum. I.e. the: 
Opera=new OperatorAdd (); 
break; 
Case OperatorEnum. Subduction: 
Opera=new OperatorSub (); 
break; 
Case OperatorEnum. Multiplication: 
Opera=new OperatorMul (); 
break; 
Default: 
Throw new ArgumentException (" operation method type exception!" ); 
} 
Opera. Num1=Num1; 
Opera. Num2=Num2; 

The return of opera; 
} 
} 

///& lt; Summary> 
///operator enumeration 
///& lt;/summary> 
Public enum OperatorEnum 
{
///& lt; Summary> 
///addition 
///& lt;/summary> 
I.e.=1, 
///& lt; Summary> 
///subtraction 
///& lt;/summary> 
Subduction=2, 
///& lt; Summary> 
///multiplication 
///& lt;/summary> 
Multiplication=3 
} 

CodePudding user response:

 
nullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnull