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#include<iostream>									// This is the beginning of a "LoShu magic square" program for class, currently my
#include <vector>									// goal is simply getting vectors to check whether or not a number has already been
using namespace std;								// entered, and if so to go back and ask for another one. As-is it does not work 
													// through the first iteration. It recognizes the first number, says it's already in
bool theCheckening(vector<int>, int );				// and proceeds to take ANY numbers afterwards, repeats and all.
 
int main () {
 
	int tester;
 
	vector<int> loShu1;			// Rows 1-3 of a "square"
	vector<int> loShu2;
	vector<int> loShu3;
	vector<int> testCaseOut(1,0);	// Test vector to iterate inside check function
 
 
	do {
 
			do{
				cout << "Enter 1-9: ";				// Working as intended, makes sure no number besides 1-9 is entered
				cin >> tester;
			} while (tester < 1 || tester > 9);
 
			// Put initial value into test Vector
			if (theCheckening(testCaseOut, tester)){	// If check function returns true, add value to row 1
				loShu1.push_back(tester);
				testCaseOut.push_back(tester);	
				cout << "It worked?!";
			}
 
		} while (loShu1.size() <= 2);					// shooting for size of 3, working as intended
 
 
	for (int var : loShu1)							// Debug to see rows before maths and adding them (to come)
		cout << var << " ";
 
	cout << "\n";
 
	for (int var : loShu2)
		cout << var << " ";
 
	cout << "\n";
 
	for (int var : loShu3)
		cout << var << " ";
 
	return 0;
}
 
bool theCheckening(vector<int> testCaseInc, int testInt) {
 
		int count;
		vector<int> testCase(testCaseInc);			// Initialize vector inside check function to current test numbers
		for (int var : testCase)
			cout << var << " ";
		for (count = 0;count<=testCase.size();count++) {		// for all the numbers inside the testing vector
			if (testCase[count]!=testInt){					// if current position of test vector is ! in vector already,
				cout << "ADDED!";							// add it to row back in main()
				return true;
			for (int var : testCase)
				cout << var << " ";
				}
			cout << "ALREADY ENTERED!";				// Debug
			cout << testCase.size();
			return false;				// otherwise, ignore and ask for another number
 
			}
}

Main.java:1: error: illegal character: '#'
#include<iostream>									// This is the beginning of a "LoShu magic square" program for class, currently my
^
Main.java:1: error: class, interface, or enum expected
#include<iostream>									// This is the beginning of a "LoShu magic square" program for class, currently my
        ^
Main.java:2: error: illegal character: '#'
#include <vector>									// goal is simply getting vectors to check whether or not a number has already been
^
Main.java:5: error: class, interface, or enum expected
bool theCheckening(vector<int>, int );				// and proceeds to take ANY numbers afterwards, repeats and all.
^
Main.java:7: error: class, interface, or enum expected
int main () {
^
Main.java:11: error: class, interface, or enum expected
	vector<int> loShu1;			// Rows 1-3 of a "square"
	^
Main.java:12: error: class, interface, or enum expected
	vector<int> loShu2;
	^
Main.java:13: error: class, interface, or enum expected
	vector<int> loShu3;
	^
Main.java:14: error: class, interface, or enum expected
	vector<int> testCaseOut(1,0);	// Test vector to iterate inside check function
	^
Main.java:17: error: class, interface, or enum expected
	do {
	^
Main.java:21: error: class, interface, or enum expected
				cin >> tester;
				^
Main.java:22: error: class, interface, or enum expected
			} while (tester < 1 || tester > 9);
			^
Main.java:25: error: class, interface, or enum expected
			if (theCheckening(testCaseOut, tester)){	// If check function returns true, add value to row 1
			^
Main.java:27: error: class, interface, or enum expected
				testCaseOut.push_back(tester);	
				^
Main.java:28: error: class, interface, or enum expected
				cout << "It worked?!";
				^
Main.java:29: error: class, interface, or enum expected
			}
			^
Main.java:34: error: class, interface, or enum expected
	for (int var : loShu1)							// Debug to see rows before maths and adding them (to come)
	^
Main.java:37: error: class, interface, or enum expected
	cout << "\n";
	^
Main.java:39: error: class, interface, or enum expected
	for (int var : loShu2)
	^
Main.java:42: error: class, interface, or enum expected
	cout << "\n";
	^
Main.java:44: error: class, interface, or enum expected
	for (int var : loShu3)
	^
Main.java:47: error: class, interface, or enum expected
	return 0;
	^
Main.java:48: error: class, interface, or enum expected
}
^
Main.java:53: error: class, interface, or enum expected
		vector<int> testCase(testCaseInc);			// Initialize vector inside check function to current test numbers
		^
Main.java:54: error: class, interface, or enum expected
		for (int var : testCase)
		^
Main.java:56: error: class, interface, or enum expected
		for (count = 0;count<=testCase.size();count++) {		// for all the numbers inside the testing vector
		^
Main.java:56: error: class, interface, or enum expected
		for (count = 0;count<=testCase.size();count++) {		// for all the numbers inside the testing vector
		               ^
Main.java:56: error: class, interface, or enum expected
		for (count = 0;count<=testCase.size();count++) {		// for all the numbers inside the testing vector
		                                      ^
Main.java:59: error: class, interface, or enum expected
				return true;
				^
Main.java:60: error: class, interface, or enum expected
			for (int var : testCase)
			^
Main.java:62: error: class, interface, or enum expected
				}
				^
Main.java:64: error: class, interface, or enum expected
			cout << testCase.size();
			^
Main.java:65: error: class, interface, or enum expected
			return false;				// otherwise, ignore and ask for another number
			^
Main.java:67: error: class, interface, or enum expected
			}
			^
34 errors

Standard output is empty