longjmp(j, 3); /* jump to exception handler case 3 */ printf("this line should never appear\n"); } int main(void) { switch (setjmp(j)) { case 0: printf("''setjmp'' is initializing ''j''\n"); raise_exception();
longjmp(j, 3); /* jump to exception handler case 3 */ printf("this line should never appear\n"); } int main(void) { switch (setjmp(j)) { case 0: printf("''setjmp'' is initializing ''j''\n"); raise_exception(); printf("this line should never appear\n"); case 1: printf(...
intmain(){// 一个缓冲区,用来暂存环境变量jmp_buf buf;printf("line1 \n");// 保存此刻的上下文信息int ret=setjmp(buf);printf("ret = %d \n",ret);// 检查返回值类型if(0==ret){// 返回值0:说明是正常的函数调用返回printf("line2 \n");// 主动跳转到 setjmp 那条语句处longjmp(buf,1);...
我们可以看到注释上说明,scanf从标准输入stdin输入读取数据,在glibc中stdin的定义如下: /*stdio.c*/FILE*stdin=(FILE*)&_IO_2_1_stdin_;/*libio.h*/externstruct_IO_FILE_plus_IO_2_1_stdin_;/*libioP.h*/struct_IO_FILE_plus{FILEfile;conststruct_IO_jump_t*vtable;}; 从以上代码我们可以知道,最终...
Adds items to the canonical Tasks category. Copy BOOL AddTask( LPCTSTR strTargetExecutablePath, LPCTSTR strCommandLineArgs, LPCTSTR strTitle, LPCTSTR strIconLocation, int iIconIndex); BOOL AddTask(IShellLink* pShellLink); Parameters strTargetExecutablePath Specifies the target task path. strCommand...
initializes it for the jump. This routine saves the program's calling environment in the environment buffer specified by the env argument for later use by longjmp. If the return is from a direct invocation, setjmp returns 0. If the return is from a call to longjmp, setjmp returns a non...
Jump to line matching current line. If FILE and LINE are not specified, the current editing location is used. (disaster-find-project-root &optional LOOKS FILE) General-purpose Heuristic to detect bottom directory of project. First, this will try to use (vc-root-dir) to guess the project ...
Line jump style lets you specify the shape of the jump, such as a smooth arc, a gap, a square, or a multi-sided arc. Use the sliders, or enter numbers, for Vertical size and Horizontal size to specify the size of line jumps for vertical and horizontal connector lines. Clic...
这些准则涵盖了标准C环境、未使用代码处理、数据类型和表达式、控制流、函数等多个方面,旨在最大限度地消除或减少编程错误。 1.4 重要性与作用 MISRA C:2012的重要性在于它提供了一个统一的、可遵循的C语言编程标准,有助于减少因编程习惯、风格差异等因素导致的软件缺陷。同时,遵循MISRA C:2012也有助于提升代码的...
floor(), floorf(), floorl() — Round down to integral value floord32(), floord64(), floord128() — Round down to integral value _flushlbf() — Flush all open line-buffered files fma(), fmaf(), fmal() — Multiply then add fmad32(), fmad64(), fmad128() — Multiply...