Syntax error: Unterminated quoted string

Shell Programming and Scripting
1

I keep having problems when exicuting this file. It always gives me the error message "36: Syntax error: Unterminated quoted string"
If someone could help me edit this it would be much appreciated.

#!/bin/sh
#
# This will continue adding numbers
# untill the total is greater than 1,000
#
if test $num1=0
  then
    {
        echo "Please enter two numbers."
        read num1 Total
        echo "The number you entered is $num1"
        Total = `expr $Total + $num1`
    }
  elif test $num1>0
    then
      {
        echo "The current value is $Total."
        echo "Please enter another number."
        read num1
        echo "The number you entered is $num1"
        Total = `expr $Total + $num1`
      }
  elif test $num1<0
    then
      {
        echo "I'm sorry, the value you entered is invalid"
        echo "Please enter a number that is greater than zero."
        read num1
        echo "The number you entered is $num1"
        Total = `expr $Total + $num1`"
      }
  else
      {
        echo "Total is greater than 1,000\n"
        echo "CAN NOT COMPUTE!!!!!\n"
        echo "System shutdown"
      }
fi
2

delete the red "

3

I looked over that section so many times and can't believe I missed that.
Thanks

4

another thing, I can't seem to get the following to appear
Total = `expr $Total + $num1`

besides that i need it to loop intil the final value reaches higher than 1000

If anyone could help, again it would be much appreciated.

5

delete the spaces...

Total=$(expr ...+...)
6

Thanks again.