轩少不冷 发表于 2020-11-20 15:08:02

一道练习题


求解啊！！！
怎么做怎么做

自学编程的聪聪 发表于 2020-11-20 15:27:56

#include<iostream>
using namespace std;
int main()
{
int i,j,k,h,s;
int a;
for(i=123;i*3<=987;i++)
{
for(h=1;h<10;h++)
a=0;
a=1;
a=1;
a=1;
j=i*2;
a=1;
a=1;
a=1;
k=i*3;
a=1;
a=1;
a=1;
for(s=0,h=1;h<10;h++)
s=s+a;
if(s==9)
cout<<"i="<<i<<" j="<<j<<" k="<<k<<endl;
}
return 0;
}

jitianmoshen 发表于 2020-11-20 15:51:07

本帖最后由 jitianmoshen 于 2020-11-20 15:57 编辑

#include <stdio.h>
#include <stdbool.h>
int main(void)
{
    int n1,n2,n3,i;
    bool flag = false;
    for (n1 = 123;n1 * 3 < 987;n1++)
    {
      flag= true;
      int count = {0};
      n2 = n1 * 2;
      n3 = n1 * 3;
      count++;
      count++;
      count++;
      count++;
      count++;
      count++;
      count++;
      count++;
      count++;
      for (i = 1;i < 10;i++)
      {
            if (count > 0 || count == 0)          //如果有数字0或者1-9有数字未使用
            {
                flag= false;
                break;
            }
      }
      if (!flag)
            continue;
      else
            printf("%5d %5d %5d\n",n1,n2,n3);
    }
    return 0;
}

我是初中生 发表于 2020-11-20 16:56:35

homework1.c: In function ‘countLines’:
homework1.c:19: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘int’
homework1.c:22: error: ‘fp’ undeclared (first use in this function)
homework1.c:22: error: (Each undeclared identifier is reported only once
homework1.c:22: error: for each function it appears in.)
homework1.c:22: error: ‘filename’ undeclared (first use in this function)
homework1.c:24:18: warning: missing terminating " character
homework1.c:24: error: missing terminating " character
homework1.c:25: error: expected expression before ‘return’
homework1.c:26: error: expected ‘;’ before ‘}’ token
homework1.c:30:14: warning: missing terminating ' character
homework1.c:30: error: missing terminating ' character
homework1.c:31: error: expected expression before ‘{’ token
homework1.c:34: error: expected expression before ‘}’ token
homework1.c: In function ‘findAllDirs’:
homework1.c:63: warning: assignment makes pointer from integer without a cast
我已经检查很多次，错在哪里

轩少不冷 发表于 2020-11-21 22:08:48

谢谢大家
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