#include   <stdio.h>
int summa(int n2);
int summa(int n1, int n2);
double summa(double n1, double n2);

///////////////////////////////////////////
int main()
{


    printf("summa =  %d  \n", summa(300     ));
    printf("summa =  %d  \n", summa(3  , 2  ));
    printf("summa =  %.2f\n", summa(3.2, 2.1));
return 0;
}


///////////////////////////////////////////
double summa(double n1, double n2)
{

return n1 + n2;
}



///////////////////////////////////////////
int summa(int n1, int n2)
{

return n1 + n2;
}


///////////////////////////////////////////
int summa(int n2)
{

return 7 + n2;
}