Ything-Public/rpn
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases 2 Wiki Activity

added help data

Browse Source
This commit is contained in:
David Senk
2023-09-07 20:05:35 -04:00
parent a68ed333e1
commit 3435fee3b0
1 changed files with 46 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

47
src/main.rs
View File

@@ -252,5 +252,50 @@ fn ceil(a: f64, b: f64) -> f64 {
} }
fn print_help() { fn print_help() {
println!("RPN Calculator Help") println!("RPN Calculator Help");
println!();
println!("This is an RPN (Reverse Polish Notation) calculator program. This works by pushing numbers to a stack, and then completing operations on the pushed numbers in the order that they were added to the stack.");
println!();
println!("Example: 4 [enter] 3 [enter] * [enter]");
println!("Will display 12 on the Current Stack (i.e. 4 * 3 = 12)");
println!();
println!("Many more math functions are available:");
println!();
println!("[Command] [Function]");
println!("q quit calculator (ctrl-c also works)");
println!("+ add the last two numbers on the stack");
println!("- subtract the last two numbers on the stack");
println!("* or x multiply the last two numbers on the stack");
println!("/ divide the last two numbers on the stack");
println!("% output the remainder of the division of the last two numbers on the stack (modulus)");
println!("clear or c clear the stack of all values");
println!("del or d remove the last number pushed to the stack (this can be repeated multiple times)");
println!("floor take the last two numbers from the stack, and push the lower number back onto the stack");
println!("ceil take the last two numbers from the stack, and push the higher number back onto the stack");
println!("round round the last number on the stack (follows conventional rules, 0.5 rounds up)");
println!("abs change the last number on the stack to it's absolute value");
println!("pow raise the number on the stack prior to the last input to the power of the last number input");
println!(" Example: 3 [enter] 2 [enter] pow [enter] Output: 9");
println!("sqrt or v change the last number on the stack to it's square root");
println!("cbrt or v3 change the last number on the stack to it's cube root");
println!("ln change the last number on the stack to it's natural log");
println!("log change the last number on the stack to it's base10 log");
println!(
"sin change the last number on the stack to it's sine value (radians)"
);
println!("asin, sinh the same thing, but arc and hyperbolic instead");
println!(
"cos change the last number on the stack to it's cosine value (radians)"
);
println!("acos, cosh the same thing, but arc and hyperbolic instead");
println!(
"tan change the last number on the stack to it's tangent value (radians)"
);
println!("atan, tanh the same thing, but arc and hyperbolic instead");
println!("me pushes the machine epsilon value onto the stack");
println!("pi pushes pi onto the stack");
println!("tau pushes tau on to the stack");
println!("help or ? print this help text");
println!();
println!();
} }