9_10.cpp

C程序参考,简单易懂,是初学者不可少的参考资料

#include<stdio.h>
#include"f2.c"
main()
{
    int a,b,c;
    float area,r=2.5;
    a=1;b=11;c=111;
    area=PI*r*r;
    PR(D1,a);
    PR(D2,a,b);
    PR(D3,a,b,c);
    PR(F1,r);
    PR(F2,r,area);
    PR(S,ST);
}
/* build a header file f2.c
#define PR printf
#define NL "\n"
#define D "%d "
#define F "%f "
#define S "%s\n"
#define D1 D NL
#define D2 D D NL
#define D3 D D D NL
#define F1 F NL
#define F2 F F NL
#define PI 3.1415926
#define ST "Southeast University" */