https://github.com/francecil
acm 的题目经常要求输出最后面一位不能有空格;
用if语句显得代码难看;
实现如下:
int a[5]={1,2,3,4,5}; for(int i=0;i<=4;i++) printf("%d%c",a[i]," \n"[i==4]);
1(空格)2(空格)3(空格)4(空格)5(\n)
a=" \n" a[0]=空格 a[1]='\n'
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