troubleshooting Question

Places where assignment operator(=) is used logically incorrectly instead of comparison operator(==) in C++. Logical error e.g. if (a=10) it should be if (a==10). Can you help me list all such cases?

Avatar of Praveen Gupta
Praveen Gupta asked on
C++
3 Comments2 Solutions172 ViewsLast Modified:
I'm doing a C++ compiler project where I need to flag warnings at places where assignment operator (`=`) can be used wrongly instead of the comparison operator (`==`)...e.g
while doing comparison in `if` statement , to check variable `a` as `10` sometimes we wrongly type if(`a`= `10`), which will result in `if` statement always `true` whereas I wanted to be `true` only if `a` is `10`. Some of the cases I can think of are :
1. `if(var = a)`, logically it should be `if( var==a )`
2. `while(var = a )`
3. `for(;var=a;)`
4. `do{}while(var=a)`
5. `var=a? "some XYZ": "some ABC"`

Can you please help me with the more cases where this logical error can occur, where the user was supposed to use `==` and by mistake `=` was used?
ASKER CERTIFIED SOLUTION
Kevin Stanush
Application Developer

Our community of experts have been thoroughly vetted for their expertise and industry experience.

Join our community to see this answer!
Unlock 2 Answers and 3 Comments.
Start Free Trial
Learn from the best

Network and collaborate with thousands of CTOs, CISOs, and IT Pros rooting for you and your success.

Andrew Hancock - VMware vExpert
See if this solution works for you by signing up for a 7 day free trial.
Unlock 2 Answers and 3 Comments.
Try for 7 days

”The time we save is the biggest benefit of E-E to our team. What could take multiple guys 2 hours or more each to find is accessed in around 15 minutes on Experts Exchange.

-Mike Kapnisakis, Warner Bros