08/01/20 09:18:24
>>272 対象もでてしまうけど
#include<stdio.h>
#include<stdlib.h>
void disp(char *p){
for(;*--p;);
puts(p+1);
}
void brace(char *work, int brace_num, int depth){
if(depth==0 && brace_num==0){
*work='\0';
disp(work);
}
if(depth>0){
*work='>';
brace(work+1, brace_num, depth-1);
}
if(brace_num>0){
*work='<';
brace(work+1, brace_num-1, depth+1);
}
}
int main(int argc, char *argv[]){
int brace_num=3;
char *work;
if(argc==2) brace_num=atoi(argv[1]);
work=malloc(brace_num*2+2);
*work='\0';
brace(work+1, brace_num, 0);
free(work);
return 0;
}