关于scl编程中强制类型转换的问题

shiyiming

有没有强制类型转换的函数，尽管程序能够通过，但编译的时候，log总是有很多的警告，不是很舒服。
e.g.
WARNING: [Line 17]  Converting the result of the character expression to a numeric
WARNING: [Line 20]  Converting the result of the character expression to a numeric
WARNING: [Line 22]  Converting numeric variable n3 to character
WARNING: [Line 22]  Converting numeric variable n2 to character
WARNING: [Line 23]  Converting numeric variable n3 to character
WARNING: [Line 23]  Converting numeric variable n2 to character
WARNING: [Line 28]  Converting the result of the character expression to a numeric
WARNING: [Line 29]  Converting numeric variable n1 to character
WARNING: [Line 30]  Converting numeric variable n1 to character

希望有人能帮我一下。谢谢。