testcc.c

来自「自己做的常用库和实现的数据结构。public domain.」· C语言 代码 · 共 69 行

#include<stdio.h>
#include<float.h>
#include<limits.h>

int main(void)
{
	void *p;

	printf("size of unsigned: %d\n", sizeof(unsigned));
	printf("size of char: %d\n", sizeof(char));
	printf("size of short: %d\n", sizeof(short));
	printf("size of int: %d\n", sizeof(int));
	printf("size of long: %d\n", sizeof(long));
	printf("size of long long: %d\n", sizeof(long long));
	printf("size of float:%d\n", sizeof(float));
	printf("size of double: %d\n", sizeof(double));
	printf("size of long double: %d\n", sizeof(long double));
	printf("size of void pointer: %d\n", sizeof(p));
	/*
	printf("FLT_DIG=%d\n", FLT_DIG);
	printf("DBL_DIG=%d\n", DBL_DIG);
	printf("LDBL_DIG=%d\n", LDBL_DIG);
	printf("FLT_EPSILON=%.70f\n", FLT_EPSILON);
	printf("DBL_EPSILON=%.70f\n", DBL_EPSILON);
	printf("LDBL_EPSILON=%.70Lf\n", LDBL_EPSILON);
	printf("FLT_MAX=%.70f\n", FLT_MAX);
	printf("DBL_MAX=%.70f\n", DBL_MAX);
	printf("LDBL_MAX=%.70Lf\n", LDBL_MAX);

	{
		unsigned a=UINT_MAX,b=UINT_MAX-1;
		float c=1.1, d=2.2,t;
		printf("\noriginal: a=%u b=%u\n", a,b);
		a += b;
		b = a-b;
		a -= b;
		printf("after swap: a=%u b=%u\n", a,b);
		printf("\noriginal:\nc=%.70f\nd=%.70f\n", c,d);
		c += d;
		d = c-d;
		c -= d;
		printf("after swap:\nc=%.70f\nd=%.70f\n", c,d);
		printf("\noriginal:\nc=%.70f\nd=%.70f\n", c,d);
		t = c; c = d; d = t;
		printf("after swap:\nc=%.70f\nd=%.70f\n", c,d);
	}
	*/
	return 0;
}
/* Demo of using __FILE__ and __LINE__ macro.
 */

#include <stdio.h>
#include <stdlib.h>

int main(void)
{
   printf("File %s: Successfully reached line %d\n", 
     __FILE__, __LINE__);

   
#line 100 "FILENAME.C"

   printf("File %s: Successfully reached line %d\n", 
   __FILE__, __LINE__);

   return EXIT_SUCCESS;
}