C语言函数大全-E篇.doc

E：函数名: ecvt功 能: 把一个浮点数转换为字符串用 法: char ecvt(double value, int ndigit, int *decpt, int *sign);程序例: #include #include #include int main(void) char *string; double value; int dec, sign; int ndig = 10; clrscr(); value = 9.876; string = ecvt(value, ndig, &dec, &sign); printf(string = %s dec = %d sign = %dn, string, dec, sign); value = -123.45; ndig= 15; string = ecvt(value,ndig,&dec,&sign); p