c ++ error

[bhardwaj]

I tried to run the following programme using g++ in linux mint and got a wonderful error.......
a little help please


//programme to find transpose of a matrix
#include<iostream>
int main()
{
using namespace std;
int a[10][10],b[10][10],i,j,m,n;
cout <<"Enter the number of rows and columns of the matrix -"<<endl;
cin>>m>>n;
cout<<"Input the values of the matrix ="<<endl;
for(i=0;i<m;i++)
{
for (j=0;j<n;j++)
cin>>a[i][j];
}
cout<<"the matrix enterd is :"<<endl;
for (i=0;i<m;i++)
{
cout <<"\n";
for (j=0;j<n;j++)
cout <<" "<<a[i][j];
}
cout <<"The transpose of the matrix u have enterd is -";
for (i=0;i<m;i++)
{
cout<<"\n";
for (j=0;j<n;j++)
b[i][j]=a[i][j];
cout<<b[i][j]<<" ";
}
return 0;
}

error:-
/usr/lib/gcc/i486-linux-gnu/4.4.1/../../../../lib/crt1.o: In function `_start':
/build/buildd/eglibc-2.10.1/csu/../sysdeps/i386/elf/start.S:115: undefined reference to `main'
collect2: ld returned 1 exit status

[gerard4143]

Could you post your makefile or compile line...

[Rubberman]

The problem is here:

int main()
{
.
.
.
}

The signature for main() is defined as either

int main(void)

or

int main(int, const char**)

The second argument can be either as shown, or can be char**, or const char*[], or char*[] as well, depending upon how mutable you want your argument list and its contents to be. In any case, it has to be some sort of arrays of pointers to char strings, or a void argument list altogether.