SUM OF ARRAY

• Problem Description

  
  Jane is fond of arrays in C program. But she finds it difficult to handle pointers with arrays. Help her to write a C Program to compute sum of the array elements using pointer. 
  
  Input : The first line contains the no of test cases, 0<T<=1000, 
  
  The Second line contains the no of array elements n of test case 1, 
  The third line contains the n integers separated by a space. 
  For T test cases the second and third lines are successively entered. 
  
  Output: The sum of array elements of each test case , 
  
  If T <0 or T>1000 print " INVALID INPUT"

• CODING ARENA::

• #include <stdio.h>

  int main()

  {

    int a,i,b,sum=0,j;

    scanf("%d",&a);

    if(a<=1000)

    {

      for(i=0;i<a;i++)

      {

        scanf("%d",&b);

        int arr[b];

        for(j=0;j<b;j++)

        {

          scanf("%d",&arr[j]);

          sum=sum+arr[j];

        }

        printf("\n%d",sum);

        sum=0;

      }

    }

    else

      printf("INVALID INPUT");

        

  
  

  return 0;

  }

• Test Case 1

  
  Input (stdin)

  2
  
  5
  
  2 4 6 8 2
  
  3
  
  10 20 30
  
  

  Expected Output

  22
  
  60

• Test Case 2

  
  Input (stdin)

  1002
  
  5
  
  1 2 3 4 5
  
  

  Expected Output

  INVALID INPUT