Pfthb

Im trying to figure out why my function for dialating an image wont work.
My goal is to turn something like this:

.........
.........
....x....
.........
.........

into this:

.........
....x....
...xxx...
....x....
.........

for each cycle of dilation.

i havent thought of it but i aslo need to to the reverse for the erosion.

This is what ive come up with so far (the program takes in input from the user in the command line using argv) :

#include <iostream>
#include <fstream>
#include <string>
#include <vector>
#include <sstream>
#include <algorithm>
//look up line by line parsing
using namespace std;
void replacee(vector<vector<char>> &vec, char oldd, char neww)

 for (vector<char> &v : vec) // reference to innver vector
 
 replace(v.begin(), v.end(), oldd, neww); // standard library 
algorithm
 

void dialationn(vector<vector<char>> & vec, char suspect)

 for (int i = 0; i < vec.size(); i ++) 
 for (int j = 0; j < vec[i].size(); j++) 
 if (vec[i][j] == suspect) 
 if (i > 0) 
 vec[i-1][j] = suspect;
 
 if (j > 0) 
 vec[i][j-1] = suspect;
 
 if (i + 1<vec.size()) 
 vec[i+1][j] = suspect;
 
 if (j + 1<vec[i].size()) 
 vec[i][j+1] = suspect;
 
 
 
 

int main(int argc, char* argv) 

 fstream fin; char ch;
 string name (argv[1]); //File Name.
 vector<vector<char>> data;
 // 2D Vector.
 vector<char> temp;
 // Temporary vector to be pushed 
 // into vec, since its a vector of vectors.
 fin.open(name.c_str(),ios::in);
 // Assume name as an arbitary file.
 string argument2 (argv[2]);
 string argument3 (argv[3]);
 string argument4 (argv[4]);
 while(fin)
 
 ch = fin.get();
 if(ch!='n') 
 temp.push_back(ch);
 
 else 
 
 data.push_back(temp); 
 temp.clear(); 
 
 
 if (argument2 == "replace") 
 replacee(data, argument3[0], argument4[0]);
 for (int i = 0; i < data.size(); i ++) 
 for (int j = 0; j < data[i].size(); j++) 
 cout << data[i][j];
 
 cout << endl;
 
 else if (argument2 == "dialate") 
 dialationn(data, argument3[0]);
 for (int i = 0; i < data.size(); i ++) 
 for (int j = 0; j < data[i].size(); j++) 
 cout << data[i][j];
 
 cout << endl;
 
 

 fin.close();
 

the dialationn function ive implemented so far uses a double for loop to cycle through the 2d array, and when it finds the character that is suppoesd to be dialated, it checks if a border is near by and sets the coordinate accordingly.

edit: fixed == typo's