Change Variable Values
If you assign a new value to an existing variable, it will overwrite the previous value:
Example
int myNum = 15; // myNum is 15
myNum = 10; // Now myNum is 10
You can also assign the value of one variable to another:
Example
int myNum = 15;
int myOtherNum = 23;
// Assign the value of myOtherNum (23) to myNum
myNum = myOtherNum;
// myNum is now 23, instead of 15
printf("%d", myNum);