Define Call by value - Computer Programming?

Functions are raise by writing their name and an appropriate list of arguments within parenthesis. Usually these arguments are in the, parameter list of the function definition and all arguments are passed "call-by-value". Whenever we call a function and passed something to it we have always passed the values of variables to the called function. These types of function calls are called "call-by-value".

The illustrations of call-by-value are shown below:

sum=cal sum(a, b);
f=fact(a);

If the variable is passed to a function, the stored value of that variable in that variable in the calling environment will not be changed.