C++ C++；如何将数组传递给函数，然后调用它来显示数组的值？
我用你给我的建议更新了代码！现在我不知道该怎么调用main中的displayinfo函数了？它说传递的参数太少了，但是当我有另一个函数传递所有数据的参数时，为什么我要传递参数呢！我不知道如何调用displayinfo来显示displayinfo的内容C++ C++；如何将数组传递给函数，然后调用它来显示数组的值？,c++,arrays,c++11,C++,Arrays,C++11,我用你给我的建议更新了代码！现在我不知道该怎么调用main中的displayinfo函数了？它说传递的参数太少了，但是当我有另一个函数传递所有数据的参数时，为什么我要传递参数呢！我不知道如何调用displayinfo来显示displayinfo的内容 #include<iostream> #include<array> #include<iomanip> #include<string> using namespace std; void set
#include<iostream>
#include<array>
#include<iomanip>
#include<string>
using namespace std;
void setCourseName(string);
void InputValue();
int main()
{
InputValue();
displayinfo( d, b);
}
void displayinfo(int d, array<char, 7> b)
{
for (int k = 0; k < d; k++)
{
cout << "Semester: " << b[k] << endl;
}
}
void InputValue()
{
char semester;
string courseTitle;
string courseType;
int credits;
string lettergrade;
double gpa;
array<char, 7> sem1array;
array<string, 7> sem1coursetitles;
array<string, 7> sem1courseTypes;
array<int, 7> sem1credits;
array<string, 7> sem1lettergrades;
int amountOFgrades = 0;
cout << "How many grades are going to be entered today? min 1 - max 7" << endl;
cin >> amountOFgrades;
for (int counter = 0; counter < amountOFgrades; counter++)
{
bool valid1 = false;
bool validCredits = false;
bool valid3 = false;
bool valid4 = false;
while (valid1 == false)
{
cout << "Enter Semester Number" << endl;
cin >> semester;
if (semester == '1' || semester == '2')
{
cout << "valid input" << endl;
sem1array[counter] = semester;
valid1 = true;
}
else
{
cout << "Invalid Input! RE ENTER SEMESTER NUMBER EITHER 1 OR 2!" << endl;
}
}
cout << "Enter Course Title: " << endl;
cin.ignore();
getline(cin, courseTitle);
if(courseTitle.size() <= 25)
sem1coursetitles[counter] = courseTitle;
else
{
cout << "Course Name Cannot Be More Than 25 Characters; Course name limited to first 25 characters!" << endl;
courseTitle = courseTitle.substr(0, 25);
sem1coursetitles[counter] = courseTitle;
}
while (valid3 == false)
{
cout << "Enter Course Type: Regular, AP, or Honors" << endl;
getline(cin, courseType);
if (courseType == "Regular" || courseType == "AP" || courseType == "Honors")
{
sem1courseTypes[counter] = courseType;
valid3 = true;
}
else
{
cout << "Invalid Input! RE ENTER COURSE TYPE EXACTLY HOW IT APPEARS EITHER Regular, AP, or Honors!" << endl;
}
}
while(validCredits == false)
{
cout << "Enter Credits Earned For Course: **Can Either Be 1-4 Credits**" << endl;
cin >> credits;
if (credits == 1 || credits == 2 || credits == 3 || credits == 4)
{
sem1credits[counter] = credits;
validCredits = true;
}
else
{
cout << "Invalid Output! Must Enter Number 1-4 For Credits Earned!" << endl;
}
}
while (valid4 == false)
{
cout << "Enter Letter Grade; Capital Letter Followed By A Plus + or Minus - If There Is One!Example: A+, A-, A, B+..." << endl;
cin.ignore();
getline(cin, lettergrade);
if (lettergrade == "A+")
{
gpa = 4.0;
sem1lettergrades[counter] = lettergrade;
valid4 = true;
}
else if (lettergrade == "A")
{
gpa = 4.0;
sem1lettergrades[counter] = lettergrade;
valid4 = true;
}
else if (lettergrade == "A-")
{
gpa = 3.7;
sem1lettergrades[counter] = lettergrade;
valid4 = true;
}
else if (lettergrade == "B+")
{
gpa = 3.3;
sem1lettergrades[counter] = lettergrade;
valid4 = true;
}
else if (lettergrade == "B")
{
gpa = 3.0;
sem1lettergrades[counter] = lettergrade;
valid4 = true;
}
else if (lettergrade == "B-")
{
gpa = 2.7;
sem1lettergrades[counter] = lettergrade;
valid4 = true;
}
else if (lettergrade == "C+")
{
gpa = 2.3;
sem1lettergrades[counter] = lettergrade;
valid4 = true;
}
else if (lettergrade == "C")
{
gpa = 2.0;
sem1lettergrades[counter] = lettergrade;
valid4 = true;
}
else if (lettergrade == "C-")
{
gpa = 1.7;
sem1lettergrades[counter] = lettergrade;
valid4 = true;
}
else if (lettergrade == "D+")
{
gpa = 1.3;
sem1lettergrades[counter] = lettergrade;
valid4 = true;
}
else if (lettergrade == "D")
{
gpa = 1.0;
sem1lettergrades[counter] = lettergrade;
valid4 = true;
}
else if (lettergrade == "F")
{
gpa = 0.0;
sem1lettergrades[counter] = lettergrade;
valid4 = true;
}
else
{
cout << "Invalid Input! Please Re-Enter Letter Grade! Example: A+, A-, A, B+..." << endl;
}
}
}
displayinfo(amountOFgrades, sem1array);
}
#包括
#包括
#包括
#包括
使用名称空间std；
void setCourseName（字符串）；
void InputValue（）；
int main（）
{
InputValue（）；
显示信息（d，b）；
}
无效显示信息（整数d，数组b）
{
对于（int k=0；k#包括
#包括
std:：数组输入_值（）
{
std：：数组数据；
//填充数组
返回数据；
}
无效显示数组（std:：数组数据）
{
for（int x:data）
std:：cout在函数使用displayinfo之后声明displayinfo，这意味着函数将找不到它
您应该将“displayinfo”的代码放在文件的前面，或者在文件的开头声明它的头（我建议这样做）。我建议对InputValue也这样做：
void InputValue();
void displayinfo(char b[]);
现在，您的函数中存在许多问题：
/*you're using two parameters of type : array<char,7> and array<string,7>*/
void displayinfo(char b[])
{
for (int k = 0; k < sem1array/*supposed to "b"*/.size(); k++)
{
/*once again you called "sem1array" "b" in this scope*/
/*"sem1coursetitles" should be the second paramater*/
cout << "Semester: " << sem1array[k] << " " << "Course: " << sem1coursetitles[k] << endl;
}
}
关于main中的调用，您没有为函数提供任何参数，因此它无法工作。数组是funvtion InputValue的局部变量。它们不能在main中访问。您应该重新设计程序。数组可以在main中定义，并作为其他函数的参数使用。void displayinfo（常量数组&a）
？@Tristan Roman像InputValue
声明一样，在调用函数之前必须声明displayinfo
函数。连续两天问同一个问题不是这样做的。请阅读部分，然后创建一个。我们会帮助您。正确的格式也很好。我仍然不知道如何调用displayinfo（）main（）中的函数？就像我想显示它的内容一样，我不想向它传递任何其他参数…谢谢你帮了我很多忙，但是我应该如何调用这个函数来显示内容，或者让displayinfo做它应该做的事情，因为我已经从另一个函数向它传递了参数。不客气！我建议创建在main中创建数组。然后将它们作为引用传递给函数。编辑：我指的是填充数组的函数。这样，数组位于main中，因此可以将它们传递给显示它们的函数。抱歉，我没有太多时间，所以我可能不太清楚：x
/*you're using two parameters of type : array<char,7> and array<string,7>*/
void displayinfo(char b[])
{
for (int k = 0; k < sem1array/*supposed to "b"*/.size(); k++)
{
/*once again you called "sem1array" "b" in this scope*/
/*"sem1coursetitles" should be the second paramater*/
cout << "Semester: " << sem1array[k] << " " << "Course: " << sem1coursetitles[k] << endl;
}
}
void displayinfo(array<char,7> b, array<string,7> c)
{
for (int k = 0; k < b.size(); k++)
{
cout << "Semester: " << b[k] << "\tCourse: " << c[k] << endl;
}
}
displayinfo(sem1array,sem1coursetitles);