| 释义 |
§ 词条解释 函数名: gcvt 功 能: 把浮点数转换成字符串 用 法: char *gcvt(double value, int ndigit, char*buf); § 程序例 #include <stdlib.h> #include <stdio.h> int main(void) { char str【25】; double num; int sig = 5; /* significant digits */ /* a regular number */ num = 9.876; gcvt(num, sig, str); printf("string = %s\", str); /* a negative number */ num = -123.4567; gcvt(num, sig, str); printf("string = %s\", str); /* scientific notation */ num = 0.678e5; gcvt(num, sig, str); printf("string = %s\", str); return(0); } |