我对以下行为差异感到困惑:
// suppose myfile.txt contains a single line with the single character 's'
errno_t res;
FILE* fp;
char cmd[81];
res = fopen_s(&fp, "D:\\myfile.txt", "rb" );
fscanf(fp,"%80s",cmd); // cmd now contains 's/0'
fclose(fp);
res = fopen_s(&fp, "D:\\myfile.txt", "rb" );
fscanf_s(fp,"%80s",cmd); // cmd now contains '/0' !
fclose(fp);
结果不依赖于调用顺序(即,首先调用 fscanf_s,您将首先获得空字符串)。在 VC++ - VS2005 上编译。任何人都可以复制吗?谁能解释一下?
谢谢!