In programming, we often encounter the need to convert text into numerical values. This transformation can be used in a variety of scenarios, such as extracting numerical data from user input, processing numerical values in text files, etc. This article will introduce several common methods and corresponding programming examples to achieve this goal.
Method 1: Use built-in functions or library functions
Most programming languages provide built-in functions or library functions to convert text into numeric values. For example, in Python, you can use int()functions to convert strings to integers and functions float()to convert strings to floating point numbers. Here is an example:
num_str = "1234"
num_int = int(num_str)
print(num_int) # 输出：1234
num_float_str = "3.14"
num_float = float