In the second activity, one of the source files produced the following compile error:

error: expected $\text{'}$;$\text{'}$ after expression

cout $"$to$"$ endl

How do we change source code to solve a "expected $\text{'}$;$\text{'}$ after expression" compile error?

delete the last expression on that line

change the data type of the expression to match cout

add a semicolon at the end of that line

add a variable declaration before that line