c++ - Comparing two data files -
i have 2 data files, in there data points same values, need produce , output in i'll have common data points.
here's code:
#include<iostream> #include<cmath> #include<fstream> using namespace std; int main() { long double p_1,pd_1, age, mag, p_2, pd_2, dm_2, tsc_2, s_2, d_2, lum_2; double data1[1659]; double data2[1688]; std::ifstream fin ("sort.txt",std::ifstream::in); std::ifstream gin ("sort1.txt", std::ifstream::in); for(int i=0; i<1659; i++) { fin>> p_1 >> pd_1 >> age >> mag; data1[i]= p_1; } for(int i=0; i<1688; i++) { gin>> p_2 >> pd_2 >> dm_2 >> tsc_2 >> s_2 >> d_2 >> lum_2; data2[i]= p_2; } for(int i=0; i<1659; i++) { if(data1[i]==data2[i]) cout<<p_2<<"\t"<<pd_2<<"\t"<<dm_2<<"\t"<<tsc_2<<"\t"<<s_2<<"\t"<<d_2<<"\t"<<lum_2<<endl; } return(0); }
i did not produce , output file wanted see output looks like. please me out here.
if data ordered, should work.
this code poor, use draft. (magic numbers, etc.)
#include <iostream> #include <cmath> #include <fstream> using namespace std; struct rec1 { long double p_1, pd_1, age, mag; }; struct rec2 { long double p_2, pd_2, dm_2, tsc_2, s_2, d_2, lum_2; }; int main() { rec1 data1[1659]; rec2 data2[1688]; std::ifstream fin("sort.txt", std::ifstream::in); std::ifstream gin("sort1.txt", std::ifstream::in); (int = 0; i<1659; i++) { fin >> data1[i].p_1 >> data1[i].pd_1 >> data1[i].age >> data1[i].mag; } (int j = 0; j<1688; j++) { gin >> data2[j].p_2 >> data2[j].pd_2 >> data2[j].dm_2 >> data2[j].tsc_2 >> data2[j].s_2 >> data2[j].d_2 >> data2[j].lum_2; } int = 0, j = 0; while (i < 1659 && j < 1688) { if (data1[i].p_1 < data2[j].p_2) i++; else if (data1[i].p_1 > data2[j].p_2) j++; else { cout << data2[j].p_2 << "\t" << data2[j].pd_2 << "\t" << data2[j].dm_2 << "\t" << data2[j].tsc_2 << "\t" << data2[j].s_2 << "\t" << data2[j].d_2 << "\t" << data2[j].lum_2 << endl; i++; j++; } } fin.close(); gin.close(); return 0; } note not necessary store whole dataset in memory. can intersection "on fly."
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