Question

WINCC 上C脚本怎么合并字符

Answer 1

char*wcid;
char*filename;
inti;
prefix="c":\\T";
suffix=".wav";
i=1;
sprintf(wcid,"%d",i);
sprintf(filename,"%s%s%s",prefix,wcid,suffix);
PlaySound(filename);
以上脚本哪里出错？
PlaySound("C:\\T1.wav");这样就可以了，为什么？
答;你没有给字符指针分配存储空间
char*prefix;
char*suffix;
char*wcid;
char*filename;
inti;
prefix=SysMalloc(30);
suffix=SysMalloc(30);
wcid=SysMalloc(30);
filename=SysMalloc(30);
prefix="c:\\T";
suffix=".wav";
i=1;
sprintf(wcid,"%d",i);
sprintf(filename,"%s%s%s",prefix,wcid,suffix);
PlaySound(filename);