所以我有这个程序，该程序应以CSV文件的形式读取输入，
CSV：
programming, 03, 60, 141, 1, 30, 0, W, 2015 algebra, 03, 62, 102, 2, 0, 0, S, 2013 religion, 08, 98, 938, 1, 30, 90, W, 2015
我们应该阅读一下结构，然后将打开一个switch/case菜单，您可以在其中添加课程数据，搜索课程并在表格中显示该课程。现在，我在将每个读取的输入存储到其给定的结构变量中时遇到问题。
我已经分配了char []个值来存储这些值，正如您所看到的，我在获得它们后立即将它们打印出来。问题是当我尝试使用strcpy()函数将每个给定变量加载到struct中时，字符串值不会被复制。我尝试查看多个不同的示例，觉得自己已经走到了尽头。我之前在其他程序中使用过这种逻辑。我猜最大的区别是buff char指针的大小为malloc的{{1}}。截至目前，struct和courseID仅在打印中，这使我相信这是存储字符串的问题。我目前不知道该如何解决这个问题。
courseSections答案 0 :(得分：1)
使用sscanf函数看起来像这样。
void loadCourseInfo() //To read all data from the input file (courseInfo.csv) and format and store
//them in an array of strutcures
{
/* FileStream for the Library File */
FILE *fptr;
char buf[100] = "";
if ( ( fptr = fopen(filename, "r" ) ) == NULL ) //Reading a file
{
printf( "File could not be opened.\n" );
return;
}
int i = 0;
char nameX[40];
char facX[3];
char subX[3];
char levX[4];
int sec1, sec2, sec3;
char semX[2];
char yearX[6];
while ( i < 3 && fgets(buf, 100, fptr) != NULL)
{
if ( 9 == sscanf ( buf, " %39[^,], %2[^,], %2[^,], %3[^,], %d, %d, %d, %1[^,], %4s"
, nameX, facX, subX, levX, &sec1, &sec2, &sec3, semX, yearX)) {
printf("%s ", nameX);
printf("%s ", facX);
printf("%s ", subX);
printf("%s ", levX);
printf("%d ", sec1);
printf("%d ", sec2);
printf("%d ", sec3);
printf("%s ", semX);
printf("%s ", yearX);
printf("\n");
courseList[i].courseID = i + 1;
strcpy(courseList[i].courseName, nameX);
strcpy(courseList[i].courseCode, facX);
strcpy(courseList[i].Term, semX);
courseList[i].courseSections[0] = sec1;
courseList[i].courseSections[1] = sec2;
courseList[i].courseSections[2] = sec3;
i++;
}
}
fclose(fptr);
}
这可能无法解决所有问题。
这一直有效...
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <ctype.h>
#define filename "courseInfo.csv"
struct CourseInfo{
int courseID;
char courseName[40];
char courseCode[10];
char Term [6];
int courseSections[3];
};
typedef struct CourseInfo courseInfo; //optional
courseInfo courseList[3];
void loadCourseInfo() //To read all data from the input file (courseInfo.csv) and format and store
//them in an array of strutcures
{
/* FileStream for the Library File */
FILE *fptr;
char buf[100] = "";
char courseCodeX[10];
char TermX[6];
if ( ( fptr = fopen(filename, "r" ) ) == NULL ) //Reading a file
{
printf( "File could not be opened.\n" );
return;
}
int i = 0;
char nameX[40];
char facX[3];
char subX[3];
char levX[4];
int sec1, sec2, sec3;
char semX[2];
char yearX[6];
while ( i < 3 && fgets(buf, 100, fptr) != NULL)
{
if ( 9 == sscanf ( buf, " %39[^,], %2[^,], %2[^,], %3[^,], %d, %d, %d, %1[^,], %4s"
, nameX, facX, subX, levX, &sec1, &sec2, &sec3, semX, yearX)) {
printf("%s ", nameX);
printf("%s ", facX);
printf("%s ", subX);
printf("%s ", levX);
printf("%d ", sec1);
printf("%d ", sec2);
printf("%d ", sec3);
printf("%s ", semX);
printf("%s ", yearX);
printf("\n");
strcpy(courseCodeX, facX);
strcat(courseCodeX, subX);
strcat(courseCodeX, "-");
strcat(courseCodeX, levX);
printf("%s\n", courseCodeX);
strcpy(TermX, semX);
strcat(TermX, yearX);
printf("%s\n", TermX);
courseList[i].courseID = i + 1;
strcpy(courseList[i].courseName, nameX);
strcpy(courseList[i].courseCode, facX);
strcpy(courseList[i].Term, semX);
courseList[i].courseSections[0] = sec1;
courseList[i].courseSections[1] = sec2;
courseList[i].courseSections[2] = sec3;
i++;
}
}
fclose(fptr);
}
void displayCourseInfo() //Print a table indicating course information
{
printf("ID Name Code Term Sections\n");
printf("--------------------------------------------------------------\n");
for(int i = 0; i < 3; i++)
{
printf("%2d %39s %3s %4s %2d,%2d,%2d \n", courseList[i].courseID, courseList[i].courseName, courseList[i].courseCode, courseList[i].Term, courseList[i].courseSections[0], courseList[i].courseSections[1], courseList[i].courseSections[2]);
}
}
void switchCaseMenu(int selection)
{
int menuActive = 1;
while(menuActive)
{
printf("Assignment 3\n");
printf("------------\n");
printf("1. Add a new course\n");
printf("2. Seearch for a course ID\n");
printf("3. Search for a course by course Name\n");
printf("4. Search for all courses by term\n");
printf("5. Display course data\n");
printf("6. Save course data\n");
printf("7. Exit\n");
printf("Please enter a selection: ");
scanf("%i", &selection);
switch(selection)
{
case 7:
menuActive = 0;
break;
case 6:
printf("Selecteed - Save Course Data\n");
break;
case 5:
printf("Selected - Display Course Data\n");
displayCourseInfo();
break;
case 4:
printf("Selected - Searfh for All Courses By Term\n");
break;
case 3:
printf("Selected - Search for Course by Course Name\n");
break;
case 2:
printf("Selected - Search for Course ID\n");
break;
case 1:
printf("Selected - Add a New Course\n");
//addCourseInfo(courseInfo, );
break;
default:
printf("Invalid Input!\n");
}
}
printf("You Have Quit!\n");
}
int main()
{
loadCourseInfo();
int select = 0;
switchCaseMenu(select);
return 0;
}