一组转换函数用于十六进制字符串二进制字符串八进制字符串到十进制整数相互转换，对数值运算和运算转换有帮助-a group function for converting hexadecimal string octal binary string string to decimal integer conversion of numerical computing and Operational Conversion help

C语言进行数值转换，十进制转八进制。C语言进行数值转换，十进制转八进制-C language for numerical convert decimal to octal