I am trying to write a small program to calculate the addition of two vectors from the user and storing it in the array. I want to get two X and Y's (like this {x,y})from the user and then add them both together.
I tried to use a 2D array like so
int[,] array = new int[0, 1] {};
but I want the user to enter the values of it. I don't know enough about c# so if anyone knows how can I solve this problem would apparitions your help
If you want to get a vector from user, you can try asking user to provide its components separated by some delimiter(s), e.g.
private static int[] ReadVector(string title) {
while (true) { // keep asking user until valid input is provided
if (!string.IsNullOrEmpty(title))
Console.WriteLine(title);
string[] items = Console
.ReadLine()
.Split(new char[] { ' ', '\t', ';', ',' },
StringSplitOptions.RemoveEmptyEntries);
if (items.Length <= 0) {
Console.WriteLine("You should provide at least one component");
continue;
}
bool failed = false;
int[] result = new int[items.Length];
for (int i = 0; i < items.Length; ++i) {
if (int.TryParse(items[i], out int value))
result[i] = value;
else {
Console.WriteLine($"Syntax error in {i + 1} term");
failed = true;
break;
}
}
if (!failed)
return result;
}
}
Then you can use this routine like this:
// We don't want any 2D matrices here, just 2 vectors to sum
int[] A = ReadVector("Please, enter vector A");
int[] B = ReadVector("Please, enter vector B");
if (A.Length != B.Length)
Console.WriteLine("Vectors A and B have diffrent size");
else {
// A pinch of Linq to compute C = A + B
int[] C = A.Zip(B, (a, b) => a + b).ToArray();
Console.WriteLine($"[{string.Join(", ", A)}] + ");
Console.WriteLine($"[{string.Join(", ", B)}] = ");
Console.WriteLine($"[{string.Join(", ", C)}]");
}
Edit: Sure you can sum vectors with a help of good old for loop instead of Linq:
int[] C = new int[A.Length];
for (int i = 0; i < A.Length; ++i)
C[i] = A[i] + B[i];
for loop to sum corresponding components
C[0]=A[0]+B[0]; C[1]=A[1]+B[1]; or you can use for(int i=0;i<2;i++)C[i]=A[i]+B[i];