15 lines
148 B
C
15 lines
148 B
C
|
#ifndef __AREA_H__
|
||
|
|
#define __AREA_H__
|
||
|
|
|
||
|
|
// 条件编译
|
||
|
|
#if __cplusplus
|
||
|
|
extern "C"
|
||
|
|
{
|
||
|
|
#endif
|
||
|
|
double S(double r);
|
||
|
|
|
||
|
|
#if __cplusplus
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#endif
|