代码: 全选
#include <stdio.h>
#include <math.h>
#define PR(X, ...) printf ("Message " #X ":" __VA_ARGS__)
int main (void)
{
double x = 36;
double y;
y = sqrt(x);
PR(1, "x = %g\n", x);
PR(2, "x = %.2f, y = %.4f\n", x, y);
return 0;
}
代码: 全选
#include <stdio.h>
#include <math.h>
#define PR(X, ...) printf ("Message " #X ":" __VA_ARGS__)
int main (void)
{
double x = 36;
double y;
y = sqrt(x);
PR(1, "x = %g\n", x);
PR(2, "x = %.2f, y = %.4f\n", x, y);
return 0;
}