Without the ellipsis notation, the behavior of a function is undefined if it receives parameters in addition to those declared in the parameter list.To call a function with a variable number of arguments, simply specify any number of arguments in the function call. An example is the printf ...
9 ps=(struct stu*)malloc(sizeof(struct stu)); 10 ps->num = 102; 11 ps->name = "Zhang ping"; 12 ps->sex = 'M'; 13 ps->score = 62.5; 14 #ifdef NUM 15 printf("Number=%d\nScore=%f\n", ps->num, ps->score); /*--Execute--*/ 16 #else 17 printf("Name=%s\nSex=%c...
A macro can be declared to accept a variable number of arguments much as a function can. The syntax for defining the macro is similar to that of a function. Here is an example: #define eprintf(...) fprintf (stderr, __VA_ARGS__) This kind of macro is calledvariadic. When the macro...
num);/*访问所有赋给 valist 的参数*/for(i=0;i<num;i++){sum+=va_arg(valist,int);}/*清理为 valist 保留的内存*/va_end(valist);returnsum/num;}intmain(){printf("Average of 2, 3, 4, 5 = %f\n",average(4,2,3
《Macros with a Variable Number of Arguments.》 1:https://stackoverflow.com/questions/2124339/c-preprocessor-va-args-number-of-arguments 2:https://gcc.gnu.org/onlinedocs/gcc-5.2.0/gcc/Variadic-Macros.html#Variadic-Macros 本文参与 腾讯云自媒体同步曝光计划,分享自作者个人站点/博客。 原始发表:2018...
functions called with variable number of arguments 4.6 lint Reference and ExamplesThis section provides reference information on lint, including checks performed by lint, lint libraries, and lint filters. 4.6.1 Diagnostics Performed by lintlint
text global main main: push rbp mov rbp,rsp mov r12, rdi ;rdi contains number of arguments mov r13, rsi ;rsi contains the address to the array of arguments printArguments: mov rdi, msg call printString mov rbx, 0 printLoop: mov rdi, qword [r13+rbx*8] call printString mov rdi, NL...
// argc argv envp//#include<stdio.h>intmain(intargc,// Number of strings in array argvchar*argv[],// Array of command-line argument stringschar**envp )// Array of environment variable strings{intcount;// Display each command-line argument.printf_s("\nCommand-line arguments:\n");for(...
In this case, the compiler checks as many arguments as there are type names in the list of parameters and converts them, if necessary, as described above. See Calls with a Variable Number of Arguments for more information. If the prototype's parameter list contains only the keyword void, ...
int NumArgs - this is the number of parameters. Normally this will already have been checked and will be exactly what you've defined in your function prototype. It is however possible to define functions with variable numbers of arguments using a stdarg-like "..." method and this is where...