C语言函数大全(e开头)

文章作者 100test 发表时间 2007:03:10 17:26:31
来源 100Test.Com百考试题网

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 = %d\n", string, dec, sign).
value = -123.45.
ndig= 15.
string = ecvt(value,ndig,&.dec,&.sign).
printf("string = %s dec = %d sign = %d\n",
string, dec, sign).

value = 0.6789e5. /* scientific
notation */
ndig = 5.
string = ecvt(value,ndig,&.dec,&.sign).
printf("string = %s dec = %d\
sign = %d\n", string, dec, sign).
return 0.
}