How to add a variable without defining a value?

Question

Angle_in_radians = Angle_in_degrees * pi / 180
The essence is to make a translation from degrees to radians. But the program will make its own difference. What should I do?

Answer 1

which language

Please put the language of your question in the tags.

Answer 2

What do you mean by defining a value ?
What do you mean by Program will make its own difference ?

Answer 3

If you do not specify a value for the variable, the compiler will select a random number

Answer 4

The value of the angle in degrees (0,2п) is given. Determinite the value of this same angle, taking into account that 180 degrees = п radians

Answer 5

Did write some code.

https://code.sololearn.com/cBexiA3ka5V0

Not sure if I understand your question
double degrees; //define a variable
degrees = 10; //assign a value
radians = (degrees * PI) //use a variable

so you can't use a variable if you do not define it.

Answer 6

All okay, because I decided problem