Show prompt on same line

src/eval.rs

@@ -1,3 +1,6 @@
+use std::io;
+use std::io::Write;
+
 pub fn do_math(arguments: String, operator: char) -> u32 {
     let split_args = arguments.split("-").collect::<Vec<&str>>();
 
@@ -33,4 +36,26 @@ pub fn args_or_comments(arguments: &str) -> String {
     }
 
     builder
+}
+
+pub fn read_stdin(prompt: &str) -> String {
+    print!("{}", prompt);
+    io::stdout().flush().unwrap();
+
+    let mut result = String::new();
+    io::stdin().read_line(&mut result).expect("Expected a string!");
+
+    result.trim().to_string()
+}
+
+pub fn inp_or_normal(value: &str) -> String {
+    let value_vec: Vec<char> = value.chars().collect();
+
+    if value_vec[0] == '<' {
+        let prompt: String = value_vec[1..].into_iter().collect();
+
+        return read_stdin(&prompt);
+    } else {
+        return value.to_string();
+    }
 }

src/main.rs

@@ -77,6 +77,7 @@ impl Program {
         let name = argument_vec[0];
         let mut value: String = argument_vec[1..].into_iter().collect();
         value = self.args_or_funcs(&value);
+        value = eval::inp_or_normal(&value);
 
         self.vars.insert(name, value);
     }