Ultrasonic sonic sensors controlling a robot

Other Hardware Robotics
4

These three variables

  unsigned int CM1 = sonar.ping_cm();
  unsigned int CM2 = sonar2.ping_cm();
  unsigned int CM3 = sonar3.ping_cm();

and these three variables:

       unsigned int CM1 = sonar.ping_cm();
       unsigned int CM2 = sonar2.ping_cm();
          unsigned int CM3 = sonar3.ping_cm();

are not the same variables.
How you expect the last three to affect any if statement is a mystery.

Go to File + Preferences, and uncheck the stupid random indent value for tab spacing. It makes your code look stupid.