I get a link error when compile C++.Net

Well I managed to clear all the errors of my last thread but I a link error occurs when I compile.

Im usind C++.Net


studentlist error LNK2019: unresolved external symbol _WinMain@16 referenced in function _WinMainCRTStartup

studentlist fatal error LNK1120: 1 unresolved externals

What is this?
How do I fix this problem!

Post the code you're using, we don't have crystal balls that give us the solutions to problems unseen......

OOps sorry im new at this.

// This is the testdriver.cpp file

#include <stdio.h>
#include <stdlib.h>
#include "list.h"

void main(){
int num, stuId;
List l;

l = CreateList();

puts(" \n HELLO WELCOME TO THE PROGRAM MENU \n===================================\n1. Write student.txt into a list.");
puts("2. Delete a file from the list.\n3. Search a student id in the list.\n4. Print the entire list.\n");
puts("Enter your selection or quit.");

scanf("%d", &num);

while(num > 0 && num < 5){

switch(num){
case 1: if(InsertInList(l))
puts("Student.txt file has been read.");
break;

case 2: puts("Enter the id of the student you would like deleted.\n");
scanf("%d", &stuId);

if(DeleteInList(stuId, l))
puts("The student has been deleted.\n");
else
puts("That student does not exist.\n");
break;

case 3: puts( "Enter the id of the student you are seeking.\n");
scanf("%d", &stuId);

stuId = SearchList(stuId, l);

if(stuId > 0)
printf("The student record is at location %d.\n", stuId);
else
puts("Sorry the student record is not available.");
break;

case 4: PrintList(l); break;

default: break;
}
scanf("%d", &num);
}
puts("\nPROGRAM TERMINATED!\n");
}

// list.cpp

#include "list.h"
#include <stdio.h>
#include <stdlib.h>

#include <string.h>
#define MAXSIZE 4

typedef struct data{
int id;
int birthyear;
char name[20];
}basestruct;

typedef struct list_format{
int size;
int maxsize;
data *dt;
}basic_list;

List CreateList(){
List temp;
temp = (List) malloc(sizeof(basic_list));
temp->size = 0;
temp->maxsize = MAXSIZE;
temp->dt = (data*) malloc(sizeof(data) * MAXSIZE);
return temp;
}

bool InsertInList(List l){
FILE *stuPtr;
data *temp;
char *token, info[50]; // info to read in file

// for( int i = 0; i < l->size; i++ )
// printf("Id: %d\nName: %s\nBirthyear: %d\n\n", l->dt[i].id, l->dt[i].name, l->dt[i].birthyear);

if((stuPtr = fopen("student.txt", "r")) == NULL){ // to open the student.txt file, save it in the solution folder
puts( "Sorry unable to open file.\n"); // "Visual Studios Projects" & in the folder with your solutions name
return false;
}
while(!feof(stuPtr)){ // while the pointer not at the end of the file
fgets(info, 50, stuPtr); // reads in 50 characters from stuPtr into the info array

if(l->size == l->maxsize){ // stack is full(l->size == l->maxsize)
l->maxsize++;
temp = (data*) malloc(sizeof(data) * l->maxsize); // full so stack has to be created
for( int i = 0; i < l->size; i++){
temp[i].birthyear = l->dt[i].birthyear; // transfers data to the temp stack
temp[i].id = l->dt[i].id;
strcpy(temp[i].name, l->dt[i].name);
} // copy string(name) into temp
l->dt = temp;
}
token = strtok(info, "\""); // tokenize the string and copies them into variable
l->dt[l->size].id = atoi(token); // that are at the bottom of the stack (location l->size)
token = strtok(NULL, "\"");
strcpy(l->dt[l->size].name, token); // strcpy used to copy the string name
token = strtok(NULL, "\"");
l->dt[l->size].birthyear = atoi(token);

l->size++;

}
fclose(stuPtr); // close the pointer to file
return true;
}

bool DeleteInList(int id, List l){
int location = -1; // initialize to false
for( int i = 0; i <= l->size; i++){ // checks the location of id
if(l->dt[i].id == id) // locate the id
location = i; // set location
} if(location < 0) // otherwise
return false; // return false if not in list

for (; location < l->size; location++){ // by moving downward from "location" and shifting each value up an array space,
// overwrite the unwanted entry
l->dt[location].id = l->dt[location + 1].id;
l->dt[location].id = l->dt[location + 1].id;
strcpy(l->dt[location].name, l->dt[location + 1].name);
}
l->size--; // decrement for deleted student
return true; // return
}

int SearchList(int element, List l){

for( int i = 0 ; i <= l->size; i++ ){ // array[0] = location 1
if(l->dt[i].id == element)
return (i + 1); // element location in list
}
return -1; // not in list
}

void PrintList(List l)
{
for( int i = 0; i < l->size; i++ )
printf("Id: %d\nName: %s\nBirthyear: %d\n\n", l->dt[i].id, l->dt[i].name, l->dt[i].birthyear);
}

void DestroyList(List l){ free(l); }


// list.h


#include "list.h"
#include <stdio.h>
#include <stdlib.h>

#include <string.h>
#define MAXSIZE 4

typedef struct data{
int id;
int birthyear;
char name[20];
}basestruct;

typedef struct list_format{
int size;
int maxsize;
data *dt;
}basic_list;

List CreateList(){
List temp;
temp = (List) malloc(sizeof(basic_list));
temp->size = 0;
temp->maxsize = MAXSIZE;
temp->dt = (data*) malloc(sizeof(data) * MAXSIZE);
return temp;
}

bool InsertInList(List l){
FILE *stuPtr;
data *temp;
char *token, info[50]; // info to read in file

// for( int i = 0; i < l->size; i++ )
// printf("Id: %d\nName: %s\nBirthyear: %d\n\n", l->dt[i].id, l->dt[i].name, l->dt[i].birthyear);

if((stuPtr = fopen("student.txt", "r")) == NULL){ // to open the student.txt file, save it in the solution folder
puts( "Sorry unable to open file.\n"); // "Visual Studios Projects" & in the folder with your solutions name
return false;
}
while(!feof(stuPtr)){ // while the pointer not at the end of the file
fgets(info, 50, stuPtr); // reads in 50 characters from stuPtr into the info array

if(l->size == l->maxsize){ // stack is full(l->size == l->maxsize)
l->maxsize++;
temp = (data*) malloc(sizeof(data) * l->maxsize); // full so stack has to be created
for( int i = 0; i < l->size; i++){
temp[i].birthyear = l->dt[i].birthyear; // transfers data to the temp stack
temp[i].id = l->dt[i].id;
strcpy(temp[i].name, l->dt[i].name);
} // copy string(name) into temp
l->dt = temp;
}
token = strtok(info, "\""); // tokenize the string and copies them into variable
l->dt[l->size].id = atoi(token); // that are at the bottom of the stack (location l->size)
token = strtok(NULL, "\"");
strcpy(l->dt[l->size].name, token); // strcpy used to copy the string name
token = strtok(NULL, "\"");
l->dt[l->size].birthyear = atoi(token);

l->size++;

}
fclose(stuPtr); // close the pointer to file
return true;
}

bool DeleteInList(int id, List l){
int location = -1; // initialize to false
for( int i = 0; i <= l->size; i++){ // checks the location of id
if(l->dt[i].id == id) // locate the id
location = i; // set location
} if(location < 0) // otherwise
return false; // return false if not in list

for (; location < l->size; location++){ // by moving downward from "location" and shifting each value up an array space,
// overwrite the unwanted entry
l->dt[location].id = l->dt[location + 1].id;
l->dt[location].id = l->dt[location + 1].id;
strcpy(l->dt[location].name, l->dt[location + 1].name);
}
l->size--; // decrement for deleted student
return true; // return
}

int SearchList(int element, List l){

for( int i = 0 ; i <= l->size; i++ ){ // array[0] = location 1
if(l->dt[i].id == element)
return (i + 1); // element location in list
}
return -1; // not in list
}

void PrintList(List l)
{
for( int i = 0; i < l->size; i++ )
printf("Id: %d\nName: %s\nBirthyear: %d\n\n", l->dt[i].id, l->dt[i].name, l->dt[i].birthyear);
}

void DestroyList(List l){ free(l); }

Regarding the error you're getting it looks like you have set the project settings to an Windows application. But you're program is a commandline application....

Start a new project and select Commandline application. You can also select that a cpp file is generated ("Hello World"). Continue from this part by pasting your code.