Lab2_Q1
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#include <iostream>
using namespace std;
#include <iostream>
#include <fstream>
using namespace std;
int main()
{
int xRes=256, yRes=256;
int color = 255;
float **xtable; // pointer to pointer[s]
xtable = new float*[yRes]; // NOTE how we do this!
for(int i=0;i<yRes;i++) {
xtable[i] = new float[xRes]; // each row points to xRes elements ("columns")
}
for(int i=0;i<yRes;i++){
for(int j=0;j<xRes;j++){
xtable[i][j]=255; // store 255 for pixel data, "for now"
}
}
ofstream pgmFile("myImg.pgm"); // output image file we're creating
// header
pgmFile << "P2" << endl;
pgmFile << xRes << " " << yRes << endl; // how many columns, how many rows
pgmFile << 255 << endl; // largest pixel value we'll be outputting (below)
// pixel data
for(int i=0;i<yRes;i++){
if(i%32 == 0){
if(color == 0){
color = 255;
}else{
color = 0;
}
}
for(int j=0;j<xRes;j++){
if(i%32 == 0){
if(color == 0){
color = 255;
}else{
color = 0;
}
}
xtable[i][j] = color;
pgmFile << xtable[i][j] << " ";
}// next column
pgmFile << endl;
}// next row
// all done!
pgmFile.close();
return 0;
}// main()
Cpp
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