提交记录 #285

编译情况：编译错误

code.c: In function ‘isprime’:
code.c:32:20: warning: ‘return’ with a value, in function returning void [-Wreturn-type]
   32 |     if(n<=0)return 0;
      |                    ^
code.c:31:6: note: declared here
   31 | void isprime(int n){
      |      ^~~~~~~
code.c:33:20: warning: ‘return’ with a value, in function returning void [-Wreturn-type]
   33 |     if(n==2)return 1;
      |                    ^
code.c:31:6: note: declared here
   31 | void isprime(int n){
      |      ^~~~~~~
code.c:34:22: warning: ‘return’ with a value, in function returning void [-Wreturn-type]
   34 |     if(n%2==0)return 0;
      |                      ^
code.c:31:6: note: declared here
   31 | void isprime(int n){
      |      ^~~~~~~
code.c:36:26: warning: ‘return’ with a value, in function returning void [-Wreturn-type]
   36 |         if(n%i==0)return 0;
      |                          ^
code.c:31:6: note: declared here
   31 | void isprime(int n){
      |      ^~~~~~~
code.c:38:12: warning: ‘return’ with a value, in function returning void [-Wreturn-type]
   38 |     return 1;
      |            ^
code.c:31:6: note: declared here
   31 | void isprime(int n){
      |      ^~~~~~~
/usr/bin/ld: /tmp/cckGITBe.o: in function `main':
code.c:(.text.startup+0x4f): undefined reference to `isPrime'
/usr/bin/ld: code.c:(.text.startup+0x5f): undefined reference to `isPrime'
collect2: error: ld returned 1 exit status

固定测试点暂不可用

等待中

N/A

N/A

附加测试点暂不可用

不可用

N/A

42【中学】孪生素数（编子函数）

#include<math.h>
void isprime(int n){
    if(n<=0)return 0;
    if(n==2)return 1;
    if(n%2==0)return 0;
    for (int i=3;i<=sqrt(n);i+=2){
        if(n%i==0)return 0;
    }
    return 1;
}