[Dev-C++] Error!!

i have dev-cpp, its in spanish but ill try to traduce the error things...
my file name is called "Problema1"..
 
well i get this error:
 
Circular Problema1 <- Problema1.o dependency dropped. 
C:\Dev-Cpp\Makefile.win [Build Error]  [Problema1] Error 1
 
With more details:
 
Compiler: Default compilerBuilding Makefile: "C:\Dev-Cpp\Makefile.win"executing make...make.exe -f "C:\Dev-Cpp\Makefile.win" allmake.exe: Circular Problema1 <- Problema1.o dependency dropped.
gcc.exe      -o Problema1
gcc.exe: no input files
make.exe: *** [Problema1] Error 1
 
The code is:
 
#include<iostream>#include<cstdlib>using namespace std;
int a, b, c, d, e, f, g, h, i , j;int main(){cout << "Write 10 numbers:\n";cout << "Number 1:\n";cin >> a;cout << "Number 2:\n";cin >> b;cout << "Number 3:\n";cin >> c;cout << "Number 4:\n";cin >> d;cout << "Number 5:\n";cin >> e;cout << "Number 6:\n";cin >> f;cout << "Number 7:\n";cin >> g;cout << "Number 8:\n";cin >> h;cout << "Number 9:\n";cin >> i;cout << "Number 10:\n";cin >> j;int sum=a+b+c+d+e+f+g+h+i+j;cout << "The sum of this numbers is:" << sum << "\n";int average= sum/10;cout << "The average of this numbers is:" << average << "\n";
system("PAUSE");return 0;}
 
hope you can help me...im trying to learn C++ but i have some problems like this one...
thank you very much,
Tomas Cordeviola
 
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