Question

新手程序员在这里为我的计算机科学同事学习我的当前任务有问题，而且我正试图弄清楚我的2个语法错误在哪里。我一直在寻找我已经完成的类似任务，但无济于事我无法找到我遇到的问题。

我在这两行上遇到以下错误：

＆＃39;其他＆＃39;没有先前的＆＃39;如果＆＃39; @＆＃34;否则if（num＆gt; = 1＆amp;＆amp; num＆lt; = 50＆amp;＆amp; num％2 == 0）//检查1到50之间的偶数＃＆＃34;

在＆＃39;％＆＃39;之前预期的主要表达令牌@＆＃34;否则if（num> 50 %% num＆lt; = 100＆amp;＆amp; num％10 == 0）//检查51和100之间的MULTIPLE OF 10＆＃34;

using namespace std;

int main ()
{

    cout << "Jon Grezda CS 12 Wednesday 6-8pm" << endl;
    cout << "Assignment #9" << endl;

    int num;
//num - Number input

    cout << "Please enter a whole number between the numbers 1-100." << endl;
    cin >> num;     //Is the number in the right range?

    if (num < 1 || num > 100) //INVALID Number, Terminate program

        cout << "INVALID NUMBER, rerun program and please try again" << endl;
    cout << "Program Terminated";

    else if (num >= 1 && num <= 50 && num % 2 == 0) //check for EVEN number between 1 and 50

        cout << "The number " << num << " is an EVEN number";

    else if (num >= 1 && num <= 50 && num % 2 == 1) //check for ODD number between 1 and 50

        cout << "The number " << num << " is an ODD number";

    else if (num > 50 % % num <= 100 && num % 10 == 0) // Check for MULTIPLE OF 10 between 51 and 100

        cout << "The number " << num << "is A MULTIPLE OF 10";

    else // Check for NOT A MULTIPLE OF 10 between 51 and 100
        cout << "The number " << num << "is NOT A  MULTIPLE OF 10";

}

Answer 1

if和else之间有两条陈述。您需要使用大括号{ }将这些语句分组为一个。

if (num < 1 || num > 100) //INVALID Number, Terminate program
{
    cout<<"INVALID NUMBER, rerun program and please try again"<<endl;
    cout<<"Program Terminated";
}
else if (num >= 1 && num <= 50 && num % 2 == 0) //check for EVEN number between 1 and 50

Answer 2

添加分组为@ 1201ProgramAlarm建议然后在以下条件中将“%%”替换为“＆amp;＆amp;”

if (num > 50 %% num <= 100 && num % 10 == 0) // Check for MULTIPLE OF 10 between 51 and 100

完整代码：

using namespace std;

int main ()
{

    cout << "Jon Grezda CS 12 Wednesday 6-8pm" << endl;
    cout << "Assignment #9" << endl;

    int num;
    //num - Number input

    cout << "Please enter a whole number between the numbers 1-100." << endl;
    cin >> num;     //Is the number in the right range?

    if (num < 1 || num > 100) //INVALID Number, Terminate program
    {
        cout << "INVALID NUMBER, rerun program and please try again" << endl;
        cout << "Program Terminated";
    }        
    else if (num >= 1 && num <= 50 && num % 2 == 0) //check for EVEN number between 1 and 50
    {
        cout << "The number " << num << " is an EVEN number";
    }
    else if (num >= 1 && num <= 50 && num % 2 == 1) //check for ODD number between 1 and 50
    {
        cout << "The number " << num << " is an ODD number";
    }
    else if ((num > 50 && num <= 100) && num % 10 == 0) // Check for MULTIPLE OF 10 between 51 and 100
    {
        cout << "The number " << num << "is A MULTIPLE OF 10";
    }
    else // Check for NOT A MULTIPLE OF 10 between 51 and 100
    {
        cout << "The number " << num << "is NOT A  MULTIPLE OF 10";
    }

}

预期的初级表达之前＆＃39;％＆＃39;令牌和＆＃39;否则＆＃39;没有先前的＆＃39;如果＆＃39;

2 个答案: