C programming's problem

 Programming C's solve
1.write a programming in C language to find out the sum and arrange of any three number.

Ans:-/* program to find out the sum and arrange of any three numbers */
         #include < std io .h >
         #include < con io .h >
         void main ( )
         {
          int a,b.c,sum;
          float avg;
          print f ("enter the three numbers\n")
          scan f ("%d%d%d"&a&b&c);
          sum=a+b+c
          avg= sum/3
          print f ("sum =%d,average =%f\n",sum,avg")
         getch ( );
                     }