C 语言boolean 值判断
printf("%d\n", !0);1
1
printf("%d\n", !0);
#include <stdio.h>
int main(){
int x=23;
do{
printf("%d",x--);
}while(!x);
}1
#include <stdio.h>
2
int main(){
3
int x=23;
4
do{
5
printf("%d",x--);
6
}while(!x);
7
}
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