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c++ - some help controlling excel file with C++

I need some help to generate with a C++ programm a file in Excel format (or at
least in a way that all the information in it can be read by Excel) containing
a graph with the data I choose. As an example I include a simple script that
generates an output file with two columncontrollings of integers and I` d like
to add in it a graph in the same file so that when you open the output file
aaa.xls with Excel both the numrical data and graph are present.


#include <fstream>  

using namespace std;  

int main()  


double a[10]= {1,2,3,4,5,6,7,8,9,10}; 

double b[10]= {11,12,13,14,15,16,17,18,19,20};  

ofstream fout;  


int n= 0; 

for(n= 0; n< 10; n++) 


fout<< a[n]<<"\t"<<b[n]<<endl; 



return 0; 


Jan 03 2005