Çó½ÌC¸ßÊÖ£¬Ò»ÌâcÓïÑÔ³ÌÐò×÷Òµ£¡ - C/C++ / CÓïÑÔ
ÏÂÃæÒ»¶Î³ÌÐò»á²úÉúʲô½á¹û£¿ÎªÊ²Ã´£¿
void GetMemory(char *p,int num)
{
p = (char *)malloc(sizeof(char),num);
return;
}
int main()
{
char *str = NULL;
GetMemory(&str,100);
strcpy(str,"Helllo World.");
printf(str);
return 0;
}
¸ßÖÊÁ¿CÁÖÈñ¸½C++Ìâ
£¨1£©Äܹ»Êä³öHelllo World.
£¨2£©ÄÚ´æÐ¹Â©
ûÓÐÊÍ·ÅÄڴ棬ÍüÁË¡£returnǰ¼ÓÒ»¾ä:
free(str);
Õý½â...
C/C++ code:
void GetMemory(char *p,int num)
{
p = (char *)malloc(sizeof(char) * num); // Õâ¶ùÓ¦¸ÃÊÇ*°É¡£
return;
}
int main()
{
char *str = NULL; // Õâ¾äÏ൱ÓÚconst char* str = NULL; str ²»¿É±ä¡£
GetMemory(str,100); //Õâ¾ästr»¹ÊÇNULL¡£
strcpy(str,"Helllo World.");
printf(str);
return 0;
}
C/C++ c
Ïà¹ØÎÊ´ð£º
ÇëÎÊVFPÖÐÈçºÎµ÷ÓÃC/C++º¯Êý£¿
ÄãÒªµ÷ÓÃʲô¹¦Äܵĺ¯Êý£¿Òª¿´¿´VFPÖÐÓÐûÓжÔÓ¦µÄº¯Êý£¬Èç¹ûÓоÍÊ¡×ÅÔÙµ÷ÓÃÁË¡£Èç¹ûûÓУ¬¿ÉÒÔ½«C/C++º¯Êýд¸öDLL»òFLL£¬È»ºóÔÚVFPµ÷Óü´¿É¡£
Ê®¶¹Èý ÀÏʦ£¬Ôõô²ÅÄÜÐÞ¸Ä×Ô¼ºµÄ ......
ÔÚ¸ùĿ¼/libÖдæ·ÅÒ»¸ölog.c£¬log.h£¬²¢ÓÃÏÂÃæµÄÓï¾ä£º
gcc -c log.c
ar crv liblog.a log.o
±àÒë³öÒ»¸öliblog.a¾²Ì¬¿â£¬È»ºóÔÚÎļþ¼Ð£º/testfileÖд´½¨Ò»¸ötest.cºÍtestc.c£¬test.cÖÐÒýÓÃÁËtestc.cÖж¨ÒåµÄ·½·¨ ......
ͦ·±Ëö£¬Ö®Ç°·¢µÄÌû×Ó£¬·Öֵ̫µÍÏÖÔÚÖØ·¢Ò»¸ö¡£»¶Ó¸÷λ´óÏÀ~~
#include "stdlib.h"
#include "math.h"
#include "stdio.h"
float objfx(float x[]);
void constraint(float x[] ......
ÎÒ¸Õ°ÑÌ·ºÆÇ¿µÄµÚÈý°æµÄÊéѧÍ꣬ÎÒÖªµÀµÄÓÐC++£¬CºÍÖ¸Õë CȱÏݺÍÏÝÚå Cר¼Ò±ä³É£¬»¹ÓÐÊý¾Ý½á¹¹£¬ÎÒÏëÎÊÎÊÎÒÓ¦¸ÃÒÔʲô˳ÐòÀ´Ñ§ÄØ
CȱÏݺÍÏÝÚå Cר¼Ò±à³Ì
Êǽø½×µÄ£¬²»Óü±×Å¿´
ÖÁÓÚ
CºÍÖ¸Õë
Äã²»Àí½âÖ ......