log10 C语言

函数原型：double log(double x);

double log10(double x); 例子：void main( void )

{

double x = 9000.0;

double y;

y = log( x );

printf( "log( %.2f ) = %f\n", x, y );

y = log10( x );

printf( "log10( %.2f ) = %f\n", x, y );

}输出结果如下：log( 9000.00 ) = 9.104980

log10( 9000.00 ) = 3.954243谢谢采纳