errno_tmemcpy_s(void*dest,size_tdestSize,constvoid*src,size_tcount );errno_twmemcpy_s(wchar_t*dest,size_tdestSize,constwchar_t*src,size_tcount ); Parameters dest New buffer. destSize Size of the destination buffer, in bytes formemcpy_sand wide characters (wchar_t) forwmemcpy_s. ...
int len_src = sizeof(src)/sizeof(char); int len_dst = sizeof(dst) / sizeof(char); printf("len_src:%d len_dst:%d\n", len_src,len_dst); printf("memcpy_s之前 dst:%s\n", dst); memcpy_s(dst, sizeof(dst)/sizeof(dst[0]), src,sizeof(src)/sizeof(src[0])); printf("me...
3.memcpy_s函数第二个参数numberOfElenments必须大于等于memcpy_s函数第四个参数count,否则拷贝将出现中断 memcpy_s(dst, sizeof(dst)/sizeof(dst[0]), src,sizeof(src)/sizeof(src[0])); //正确写法 memcpy_s(dst, sizeof(src)/sizeof(src[0]), src,sizeof(src)/sizeof(src[0])); //错误写...
errno_t memcpy_s( void *dest, size_t numberOfElements, const void *src, size_t count ); errno_t wmemcpy_s( wchar_t *dest, size_t numberOfElements, const wchar_t *src, size_t count ); Parametersdest New buffer. numberOfElements Size of the destination buffer. src Buffer to copy ...
void * Memcpy1(void *dst, const void *src, size_t num) { int nchunks = num/sizeof(dst); /*按CPU位宽拷贝*/ cout<<"sizeof(dst)是:"<<sizeof(dst)<<endl; int slice = num%sizeof(dst); /*剩余的按字节拷贝*/ unsigned long * s = (unsigned long *)src; ...
errno_t memcpy_s( void *dest, size_t numberOfElements, const void *src, size_t count ); errno_t wmemcpy_s( wchar_t *dest, size_t numberOfElements, const wchar_t *src, size_t count ); Parameters dest New buffer. numberOfElements ...
errno_tmemcpy_s(void*dest,size_tdestSize,constvoid*src,size_tcount );errno_twmemcpy_s(wchar_t*dest,size_tdestSize,constwchar_t*src,size_tcount ); Parameters dest New buffer. destSize Size of the destination buffer, in bytes formemcpy_sand wide characters (wchar_t) forwmemcpy_s. ...
memcpy(dest, src, sizeof(src)); printf("源内存块的数据:s\n", src); printf("目标内存块的数据:s\n", dest); return 0; } 运行以上代码,输出结果如下: 源内存块的数据:Hello 目标内存块的数据:Hello 可以看到,源内存块中的数据成功被复制到了目标内存块中。 第四步:总结和应用 PLC中的memcpy函...
errno_tmemcpy_s(void*dest,size_tdestSize,constvoid*src,size_tcount );errno_twmemcpy_s(wchar_t*dest,size_tdestSize,constwchar_t*src,size_tcount ); Parameters dest New buffer. destSize Size of the destination buffer, in bytes formemcpy_sand wide characters (wchar_t) forwmemcpy_s. ...
errno_tmemcpy_s(void*dest,size_tdestSize,constvoid*src,size_tcount );errno_twmemcpy_s(wchar_t*dest,size_tdestSize,constwchar_t*src,size_tcount ); Parameters dest New buffer. destSize Size of the destination buffer, in bytes formemcpy_sand wide characters (wchar_t) forwmemcpy_s. ...