"snprintf was not part of C90, it's a C99 addition or an extension to C90 available to certain compilers. It looks like you may be using some variant of gcc, so try adding the flag -std=c99." the above answer is right, in my make file, change c89 to c99, problem solved. also,...
n: Maximum number of bytes to be used in the buffer.The generated string has a length of at most n-1, leaving space for the additional terminating null character. is an unsigned integral type.formatC string that contains a format string that follows the same specifications as format :...
鸿蒙获取当前正在运行的程序的名称的C函数Android在SDK版本21的时候提供了getprogname()的函数,希望有这样的函数。 1 回答2k 阅读 为什么使用scanf和printf时输出数据不符合预期? using namespace std;int main(){ int a,b,c; scanf("%d%d%d",&a,&b,&c); printf("%d %d",b,c); return 0; }会输出的...
/* pretend it was %c with argument ch */ cp = buf; *buf = ch; size = 1; sign = '\0'; break; } /* * All reasonable formats wind up here. At this point, `cp' * points to a string which (if not flags&LADJUST) should be * padded out to `width' places....
，而printf函数打印输出到屏幕上。在单片机中将数值转换成字符串是sprintf函数最广的用途。