是否有 C 宏来生成重复字符串?

Suppose I want to generate ------, with only -, is there a C macro to generate repeated string ?

推荐答案

使用boost，例如

#include <stdio.h>
#include <boost/preprocessor/repetition/repeat.hpp>

#define Fold(z, n, text)  text

#define STRREP(str, n) BOOST_PP_REPEAT(n, Fold, str)

int main(){
    printf("%s
", STRREP("-", 6));
    return 0;
}