On the payroll pointers program, I am struggling with a few things on the program. The data from the terminal uses malloc, for an employee node. Dynamic Memory Allocation is used in the program. For the name of each employee I can put in the First Name or First and Last Name together as one word, but if I put them as separate words it just gives me the first name and doesn't let the user enter the rest of the information requested by the program. When I select, a option for would you like to add another employee (y/n) I get a error dialog box debug error, Run-Time Check Failure #3- The variable 'num_emp' is being used without being initialized. What do they mean by used with being initialized? I don't know what they mean by unreferenced local variable. Any solutions that would fix the errors in the program? Code: #include "stdio.h" #include "stdlib.h" #define CHAR_SIZE 20 #define STD_HOURS 40.0 #define MAX_HOURS 158.0 #define OT_RATE 1.5 struct employee { char name[CHAR_SIZE]; long id_number; float wage; float hours; float overtime; float ot_pay; float gross_pay; float Gross; struct employee *next; }; // Function gets hours for each employee float CalcOT(float hours) { /* test to see if any overtime was worked */ if (hours > STD_HOURS) return (hours - STD_HOURS); else /* no overtime was worked */ return (0.0); } float CalcOverPay (wage, ot_hrs) float wage, ot_hrs; { float ot_rate, /* ther rate the overtime is based on, such as */ /* time and a half */ ot_pay; /* The amount of pay that is from overtime */ /* calculate the overtime pay */ ot_pay = ot_hrs * (wage * OT_RATE); /* return the overtime pay to the calling function */ return (ot_pay); } /* end of function over_pay */ float CalcGross(float hours, float wage, float overtime) { float Gross; /* check for overtime and calculate gross*/ if (overtime > 0) { Gross = (STD_HOURS * wage) /* regular pay */ + (overtime * OT_RATE * wage); /* ot pay */ } /* if */ else /* not ot */ { Gross = wage * hours; } /* else */ return (Gross); } /* CalcGrossPay */ void print_list(emp1) struct employee *emp1; { struct employee *tmp; /* tmp pointer value to current node */ int i = 0; /* counts the nodes printed */ printf ("\n------------------------------------------------------------\n"); printf (" Name Clock# Wage Hours OT Gross Pay\n"); printf ("--------------------------------------------------------------\n"); /* Start a beginning of list and print out each value */ /* loop until tmp points to null (remember null is 0 or false) */ for(tmp = emp1; tmp ; tmp = tmp->next) { i++; printf("%-15s, %6d, $%6.2f %.1f %5.2f $%6.2f\n",tmp->name, tmp->id_number, tmp->wage, tmp->hours, tmp->ot_pay, tmp->gross_pay); } printf("\n\nTotal Number of Employees = %d\n", i); } /* end declarations */ int main() { char answer[80]; int more_data = 1; char value; struct employee *emp_ptr; /* always pointer to the first node */ struct employee *temp_ptr; /* points to the current node */ float ot_pay; /* overtime pay */ int i, /* loop counter */ num_emp; /* total number of employees */ struct employee *current_ptr, /* pointer to current node */ *head_ptr; /* always points to first node */ /* Set up storage for first node */ head_ptr = (struct employee *) malloc (sizeof(struct employee)); current_ptr = head_ptr; while (more_data) { printf("\nEnter employee name: "); scanf("%s", & current_ptr -> name); printf("\nEnter employee ID: "); scanf("%d", & current_ptr -> id_number); printf("\nEnter employee wage: "); scanf("%f", & current_ptr -> wage); printf("\nEnter hours worked for week: "); scanf("%f", & current_ptr -> hours); printf("Would you like to add another employee? (y/n): "); scanf("%s", answer); /* loop for each employee */ for(i=0; i < num_emp; ++i) { /* initialize the overtime pay */ ot_pay = 0.0; /* test to see if the employee worked any overtime */ if(temp_ptr->hours > STD_HOURS) { /* call local function to calculate the overtime hours */ temp_ptr->overtime = CalcOT(temp_ptr->hours); /* call local function to calculate the overtime pay */ ot_pay = CalcOverPay(temp_ptr->wage, temp_ptr->overtime); } else { temp_ptr->overtime = 0.0; } /* end of if statement */ /* call local funcion to calculate the gross pay */ temp_ptr->Gross = CalcGross (temp_ptr->wage,temp_ptr->hours,ot_pay); /* move temporary pointer to next node in the linked list */ temp_ptr = temp_ptr->next; } /* end of for loop */ /* Ask user if they want to add another employee */ if (value = toupper(answer[0]) != 'Y') { current_ptr->next = (struct employee *) NULL; more_data = 0; } else { /* set the next pointer of the current node to point to the new node */ current_ptr->next = (struct employee *) malloc (sizeof(struct employee)); /* move the current node pointer to the new node */ current_ptr = current_ptr->next; } } /* print out listing of all employee id's and wages that were entered */ print_list(head_ptr); printf("\n\nEnd of program\n"); return 0; return 0; } /* main */1>------ Build started: Project: PayrollPointers, Configuration: Debug Win32 ------ 1>Compiling... 1>payroll.c 1>f:\c programming\payrollpointers\payrollpointers\payroll.c(46) : warning C4244: 'return' : conversion from 'double' to 'float', possible loss of data 1>f:\c programming\payrollpointers\payrollpointers\payroll.c(61) : warning C4244: '=' : conversion from 'double' to 'float', possible loss of data 1>f:\c programming\payrollpointers\payrollpointers\payroll.c(56) : warning C4101: 'ot_rate' : unreferenced local variable 1>f:\c programming\payrollpointers\payrollpointers\payroll.c(75) : warning C4244: '=' : conversion from 'double' to 'float', possible loss of data 1>f:\c programming\payrollpointers\payrollpointers\payroll.c(139) : warning C4996: 'scanf': This function or variable may be unsafe. Consider using scanf_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details. 1> c:\program files (x86)\microsoft visual studio 9.0\vc\include\stdio.h(306) : see declaration of 'scanf' 1>f:\c programming\payrollpointers\payrollpointers\payroll.c(142) : warning C4996: 'scanf': This function or variable may be unsafe. Consider using scanf_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details. 1> c:\program files (x86)\microsoft visual studio 9.0\vc\include\stdio.h(306) : see declaration of 'scanf' 1>f:\c programming\payrollpointers\payrollpointers\payroll.c(145) : warning C4996: 'scanf': This function or variable may be unsafe. Consider using scanf_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details. 1> c:\program files (x86)\microsoft visual studio 9.0\vc\include\stdio.h(306) : see declaration of 'scanf' 1>f:\c programming\payrollpointers\payrollpointers\payroll.c(148) : warning C4996: 'scanf': This function or variable may be unsafe. Consider using scanf_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details. 1> c:\program files (x86)\microsoft visual studio 9.0\vc\include\stdio.h(306) : see declaration of 'scanf' 1>f:\c programming\payrollpointers\payrollpointers\payroll.c(151) : warning C4996: 'scanf': This function or variable may be unsafe. Consider using scanf_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details. 1> c:\program files (x86)\microsoft visual studio 9.0\vc\include\stdio.h(306) : see declaration of 'scanf' 1>f:\c programming\payrollpointers\payrollpointers\payroll.c(181) : warning C4013: 'toupper' undefined; assuming extern returning int 1>f:\c programming\payrollpointers\payrollpointers\payroll.c(122) : warning C4101: 'emp_ptr' : unreferenced local variable 1>f:\c programming\payrollpointers\payrollpointers\payroll.c(154) : warning C4700: uninitialized local variable 'num_emp' used 1>f:\c programming\payrollpointers\payrollpointers\payroll.c(160) : warning C4700: uninitialized local variable 'temp_ptr' used 1>Linking... 1>Embedding manifest... 1>Build log was saved at "file://f:\C Programming\PayrollPointers\PayrollPointers\Debug\BuildLog.htm" 1>PayrollPointers - 0 error(s), 13 warning(s) ========== Build: 1 succeeded, 0 failed, 0 up-to-date, 0 skipped ==========
