change the value of a variable on button press

Unity Engine
1

hey, sorry for the silly question, im new to C# and Unity.

basically im trying to make a sprint button but the way im doing it requires me to change a float variable, the code so far is:

public float movementSpeed = 5.0f;

// Movement	
		if(Input.GetButtonDown("Sprint")){
			float movementSpeed = 7.7f;	
		}
		
		float forwardSpeed = Input.GetAxis("Vertical") * movementSpeed;
		float sideSpeed = Input.GetAxis("Horizontal") * movementSpeed;

that comes up with the error: ‘movementSpeed’ conflicts with a declaration in a child block.

anybody have an easy fix for this? thanks in advance

2

Just remove the second float because you already declared your variable above the if statement.

public float movementSpeed = 5.0f;

 

// Movement 

        if(Input.GetButtonDown("Sprint")){

            movementSpeed = 7.7f; 

        }

        

        float forwardSpeed = Input.GetAxis("Vertical") * movementSpeed;

        float sideSpeed = Input.GetAxis("Horizontal") * movementSpeed;
3

thanks for the reply, that got rid of the error but didnt actually increase my players speed. but i did end up finding a solution:

// Movement	
		if(Input.GetButtonDown("Sprint")){
			movementSpeed += 3.5f;	
		}
		if(Input.GetButtonUp("Sprint")){
			movementSpeed = 4.5f;	
		}
		
		float forwardSpeed = Input.GetAxis("Vertical") * movementSpeed;
		float sideSpeed = Input.GetAxis("Horizontal") * movementSpeed;