תוכן עניינים
1. האם המספר חיובי או שלילי
2. האם המספרים זהים או שונים
3. האם סכום גדול/קטן מ-100
4. האם מספר זוגי או אי-זוגי
5. המספר הכי קרוב ל-20
6. המקסימלי מבין 3 מספרים
7. המקסימלי והמינימלי מבין 3 מספרים
8. באיזה רביע נמצאת הנקודה
9. האם משולש שווה שוקיים
10. מספר תלת-ספרתי או לא
פתרונות
פתרון תרגיל 1
using System;
namespace IfStatementExercises
{
class Program
{
static void Main(string[] args)
{
int num1, num2;
Console.Write("Enter first number: ");
num1 = int.Parse(Console.ReadLine());
Console.Write("Enter second number: ");
num2 = int.Parse(Console.ReadLine());
if((num1<0 && num2>0) || (num1>0 && num2 < 0))
{
Console.WriteLine("True - one Positive and one Negative");
}
else
{
Console.WriteLine("False - both Positive or both Negative");
}
}
}
}
פתרון תרגיל 2
using System;
namespace IfStatementExercises
{
class Program
{
static void Main(string[] args)
{
int num1, num2, sum;
Console.Write("Enter first number: ");
num1 = int.Parse(Console.ReadLine());
Console.Write("Enter second number: ");
num2 = int.Parse(Console.ReadLine());
sum = num1 + num2;
if(num1 != num2)
{
Console.WriteLine("Numbers are different. Their sum is: " + sum);
}
else
{
Console.WriteLine("Numbers are equal. 3 X SUM = "+ 3*sum);
}
}
}
}
פתרון תרגיל 3
using System;
namespace IfStatementExercises
{
class Program
{
static void Main(string[] args)
{
int num1, num2, sum;
Console.Write("Enter first number: ");
num1 = int.Parse(Console.ReadLine());
Console.Write("Enter second number: ");
num2 = int.Parse(Console.ReadLine());
sum = num1 + num2;
if(sum < 100)
{
Console.WriteLine("The sum is: {0} - Less than 100.", sum);
}
else
{
if(sum > 100)
{
Console.WriteLine("The sum is: {0} - Greater than 100.", sum);
}
}
}
}
}
פתרון תרגיל 4
using System;
namespace IfStatementExercises
{
class Program
{
static void Main(string[] args)
{
int num1;
Console.Write("Enter first number: ");
num1 = int.Parse(Console.ReadLine());
if(num1 % 2 == 0)
{
Console.WriteLine("The number is Even (Zugi)");
}
else
{
Console.WriteLine("The number is Odd (E-Zugi)");
}
}
}
}
פתרון תרגיל 5
using System;
namespace IfStatementExercises
{
class Program
{
static void Main(string[] args)
{
int num1,num2,num1_dist,num2_dist;
Console.Write("Enter first number: ");
num1 = int.Parse(Console.ReadLine());
Console.Write("Enter second number: ");
num2 = int.Parse(Console.ReadLine());
if (num1 == num2)
{
Console.WriteLine("0 - Numbers are equal.");
}
else
{
num1_dist = 20 - num1;
num2_dist = 20 - num2;
if(num1_dist < num2_dist)
{
Console.WriteLine("The number {0} is closer to 20.",num1);
}
else
{
Console.WriteLine("The number {0} is closer to 20.", num2);
}
}
}
}
}
פתרון תרגיל 6
using System;
namespace IfStatementExercises
{
class Program
{
static void Main(string[] args)
{
int num1, num2, num3, max = -1;
Console.Write("Enter first number: ");
num1 = int.Parse(Console.ReadLine());
Console.Write("Enter second number: ");
num2 = int.Parse(Console.ReadLine());
Console.Write("Enter third number: ");
num3 = int.Parse(Console.ReadLine());
//Checking who is maximum
if ((num1 > num2) && (num1 > num3))
{
max = num1;
}
if ((max == -1) && (num2 > num1) && (num2 > num3))
{
max = num2;
}
if ((max == -1) && (num3 > num1) && (num3 > num2))
{
max = num3;
}
//Print the results
if (max != -1)
{
Console.WriteLine("The maximum: {0}", max);
}
else
{
Console.WriteLine("Error - two maximum OR all equal!");
}
}
}
}
פתרון תרגיל 7
using System;
namespace IfStatementExercises
{
class Program
{
static void Main(string[] args)
{
int num1,num2,num3,min=-1,max=-1;
Console.Write("Enter first number: ");
num1 = int.Parse(Console.ReadLine());
Console.Write("Enter second number: ");
num2 = int.Parse(Console.ReadLine());
Console.Write("Enter third number: ");
num3 = int.Parse(Console.ReadLine());
//Checking who is minimum
if ((num1 < num2) && (num1 < num3))
{
min = num1;
}
if ((min == -1) && (num2 < num1) && (num2 < num3))
{
min = num2;
}
if ((min == -1) && (num3 < num1) && (num3 < num2))
{
min = num3;
}
//Checking who is maximum
if ((num1 > num2) && (num1 > num3))
{
max = num1;
}
if ((max == -1) && (num2 > num1) && (num2 > num3))
{
max = num2;
}
if ((max == -1) && (num3 > num1) && (num3 > num2))
{
max = num3;
}
//Print the results
if((min != -1) && (max != -1))
{
Console.WriteLine("The minimum: {0}", min);
Console.WriteLine("The maximum: {0}", max);
}
else
{
Console.WriteLine("Error - some numbers are equal.");
}
}
}
}
פתרון תרגיל 8
using System;
namespace IfStatementExercises
{
class Program
{
static void Main(string[] args)
{
int x, y;
Console.Write("Enter X axis number: ");
x = int.Parse(Console.ReadLine());
Console.Write("Enter Y axis number: ");
y = int.Parse(Console.ReadLine());
if (x > 0)
{
if (y > 0)
{
Console.WriteLine("({0},{1}) is in Ravia 1",x,y);
}
else
{
Console.WriteLine("({0},{1}) is in Ravia 4", x, y);
}
}
else // x < 0
{
if (y > 0)
{
Console.WriteLine("({0},{1}) is in Ravia 2", x, y);
}
else
{
Console.WriteLine("({0},{1}) is in Ravia 3", x, y);
}
}
}
}
}
פתרון תרגיל 9
using System;
namespace BasicExercises
{
class Program
{
static void Main(string[] args)
{
int sideA,sideB,sideC;
Console.WriteLine("Enater first side of the triangle: ");
sideA = int.Parse(Console.ReadLine());
Console.WriteLine("Enater second side of the triangle: ");
sideB = int.Parse(Console.ReadLine());
Console.WriteLine("Enater third side of the triangle: ");
sideC = int.Parse(Console.ReadLine());
if ( (sideA == sideB) || (sideA == sideC) || (sideB==sideC) )
{
Console.WriteLine("The triangle is Shve-Shokaim");
}
else
{
Console.WriteLine("The triangle is not Shve-Shokaim");
}
}
}
}
פתרון תרגיל 10
using System;
class Program
{
static void Main()
{
Console.Write("Enter a number: ");
int num = int.Parse(Console.ReadLine());
if ((num >= 100 && num <= 999) || (num <= -100 && num >= -999))
Console.WriteLine("Three-digit number");
else
Console.WriteLine("Not a three-digit number");
}
}