My while, is showing error, calculate and show on the screen the sum of the n odd power of degree 2 of 10 integer numbers any

Question

#include <stdio.h>
#include <stdlib.h>
int main()
{
 int numero,cont, som1, somtotal;
 int i;
 som1 = 1;
 somtotal = 1;
 char cod;
 
 while(cod!='F'){ 
     
    for(cont = 1; cont < numero;cont = cont + 1){
         printf("\nDigite o %d° numero inteiro: ",i+1);
         scanf("%i", &numero); 
         printf("%d ao quadrado = ",numero);
        printf("%d",som1);
         if(cont < numero-1)
         printf(" + ");
         som1 = som1 + 2;
         somtotal = somtotal + som1;
    }
    printf(" = %d",somtotal);
    somtotal=0;
    numero=0;
    som1=0
    cod= getche();
                  
  }
    return 0;
    
}