sprintf_s(str, 256, "%d", x); double转换成string型 char str[100]; sprintf_s(str,sizeof(str),"%.2f",123456789.69999001);
1、sprintf_s对format 中的格式化的字符的有效性进行了检查,而sprintf仅仅检查format 或者缓冲区是否是空指针。如果有错误则返回相应的错误代码。2、sprintf_s参数sizeOfBuffer是接收格式化字符串的缓冲区的大小。如果,格式化字符串过大,则sprintf_s会返回一个空string和设置无效参数句柄为激活。 总结来说,sprintf_s在...
// crt_sprintf_s.c // This program uses sprintf_s to format various // data and place them in the string named buffer. // #include <stdio.h> int main( void ) { char buffer[200], s[] = "computer", c = 'l'; int i = 35, j; float fp = 1.7320534f; // Format and print...
newlen++;// 算上终止符'\0'if(newlen > oldlen) {// 默认缓冲区不够大,从堆上分配std::vector<char>newbuffer(newlen);snprintf(newbuffer.data(), newlen, format, args...);returnstd::string(newbuffer.data()); }returnbuffer; }
#ifdefined(__STDC_LIB_EXT1__)#if(__STDC_LIB_EXT1__ >= 201112L)#define__STDC_WANT_LIB_EXT1__ 1 /* Want the ext1 functions */#endif#endif#include<stdlib.h>#include<string.h>#include<stdio.h>#if(__STDC_WANT_LIB_EXT1__ == 1)chartempArray[20]; ...
// crt_sprintf_s.c // This program uses sprintf_s to format various // data and place them in the string named buffer. // #include <stdio.h> int main( void ) { char buffer[200], s[] = "computer", c = 'l'; int i = 35, j; float fp = 1.7320534f; // Format and ...
// crt_sprintf_s.c// This program uses sprintf_s to format various// data and place them in the string named buffer.//#include<stdio.h>intmain(void){charbuffer[200], s[] ="computer", c ='l';inti =35, j;floatfp =1.7320534f;// Format and print various data:j = sprintf...
// crt_sprintf_s.c // This program uses sprintf_s to format various // data and place them in the string named buffer. // #include <stdio.h> int main( void ) { char buffer[200], s[] = "computer", c = 'l'; int i = 35, j; float fp = 1.7320534f; // Format and pr...
// #include <stdio.h> int main( void ) { char buffer[200], s[] = "computer", c = 'l'; int i = 35, j; float fp = 1.7320534f; // Format and print various data: j = sprintf_s( buffer, 200, " String: %s\n", s ); j += sprintf_s( buffer + j, 200 - j, " Char...