Generate signal from candle closed crossing 1 MA

i need help to generate candle closed crossing MA, if 1 candle closed crossing signal MA follow candle comes with signal for buy when closed up and for sell when closed down.

Note: Please this is help not have money to pay, just help me please

Bellow is the logic code.

// Calculate the indicator values

    for (int i = prev_calculated - (rates_total==prev_calculated); i < rates_total; i++){

         indvalue[i] = slowma[i];

         value_buf_a[i] = 0;

         value_buf_b[i] = 0; 

         // Check for MA crossovers

         if (i >= 0 && (i - 2) >= 0 && close[i] > (indvalue[i] + pointNum * _Point) && close[i - 2] < indvalue[i]){

            value_buf_a[i] = low[i];                 

         } 

         else{

            value_buf_a[i] = 0;

         }

         if (i >= 0 && (i - 2) >= 0 && close[i] < (indvalue[i] - pointNum * _Point) && close[i - 2] > indvalue[i]){      

            value_buf_b[i] = high[i];     

         }

         else{

            value_buf_b[i] = 0; 

         }  

    }

    return rates_total;

}