尽管%c 期待int 参数,传递 char 是安全的,因为在调用变参数函数时发生整数提升。 定宽整数类型( int8_t 等)的正确转换指定定义于头文件 <inttypes.h> (尽管 PRIdMAX、 PRIuMAX 等就是 %jd、 %ju 等的别名)。 内存写入转换指定符 %n 是安全漏洞的常见目标,这里格式字符串依赖用户输入,而有边界检查的...
尽管%c期待int实参,传递char是安全的,因为在调用变参数函数时会发生整数提升。 定宽字符类型(int8_t等)的正确转换指示定义于头文件<inttypes.h>(尽管PRIdMAX、PRIuMAX等就是%jd、%ju等的别名)。 内存写入转换指示符%n是安全漏洞的常见目标,这里格式字符串依赖用户输入,而有边界检查的printf_s系列函数不支持此转...
#include <stdio.h> #include <process.h> FILE *stream; int main( void ) { int i = 10; double fp = 1.5; char s[] = "this is a string"; char c = '\n'; fopen_s( &stream, "fprintf_s.out", "w" ); fprintf_s( stream, "%s%c", s, c ); fprintf_s( stream, ...
Universal C runtime routines by category Global variables and standard types Global constants Generic-text mappings Locale names, languages, and country-region strings Function family overviews Obsolete functions CRT alphabetical function reference CRT alphabetical function reference abort abs,...
(void){inti =10;doublefp =1.5;chars[] ="this is a string";charc ='\n'; fopen_s( &stream,"fprintf_s.out","w"); fprintf_s( stream,"%s%c", s, c ); fprintf_s( stream,"%d\n", i ); fprintf_s( stream,"%f\n", fp ); fclose( stream ); system("type fp...
c Writes a single character. The argument is first converted to wchar_t as if by calling btowc. If the l modifier is used, the wint_t argument is first converted to wchar_t. N/A N/A int wint_t N/A N/A N/A N/A N/A s Writes a character string The argument ...
Справочникпобиблиотекевременивыполнения C (CRT) Особенностибиблиотеки CRT Подпрограммыуниверсальнойсредывыполнения C покатегориям Глобал...