Thread: Inventory System Help

My team and I are instructed to make a c programming regarding an inventory system but we bump on some errors and i dont understand the nature of this error. The text folder are already made so may i know on what to improvise. Thank you.

warning: format '%d' expects argument of type 'int *', but argument has type 'int'

undefined reference to fprintf

Code:

Code:

#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#include <conio.h>
void record();
void display();
int ch;
int no;
int no2;
int i;
int c;
int tools1,tools2,tools3;
int day1,month1,year1;


struct inventory
{
        char fName1[50],fName2[50],lName1[50],lName2[50];
        int quantity1;
        int quantity2;
        int quantity3;
        int day1,month1,year1;
}t1;


int main()
{
    tools1 = 10;
    tools2 = 10;
    tools3 = 10;
    do{
    do{
    printf("\t\t\tHello!\n\tWelcome to Laboratory Inventory System!\n\n");
    printf("Press number below according to the option below!\n");
    printf("\t1. Add Record\n\t2. Display Record\n\t3. Inventory Check\n");
    printf("Please enter your option?\n");
    switch(ch)
    {
        case 1:record();
        break;


        case 2:display();
        break;


        default: printf("\nInvalid Choice!\n");
        break;
    }
    }while(ch!=3);
    }while(tools1>0,tools2>0,tools3>0);
    system("cls");
    return 0;
}
void record()
{
    FILE *fp;
    fp = fopen("LIBSUMP.txt", "w");
    for (i=0; i<no; i++)
    {
        printf("Please enter the first name of Person In Charge!(ex:Arif Imran).\n");
        scanf("%s %s",t1.fName1,t1.fName2);
        printf("Please enter the last name of Person In Charge!(ex:Ahmad Irfan).\n");
        scanf("%s %s",t1.lName1,t1.lName2);
        printf("Please enter the todays date!(ex:XX/YY/ZZZZ)\n");
        scanf("%d/%d/%d",&day1,&month1,&year1);
        int daysInMonth[12] = {31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
        int n = day1;
        t1.day1 = day1 +7;
        if (( month1 == 2 ) && (day1 == 29))
        {
            // Leap year checking, if yes, Feb is 29 days.
            if(year1 % 400 == 0 || (year1 % 100 != 0 && year1 % 4 == 0))
            {
                daysInMonth[1] = 29;
            }
        }


        if (t1.day1 > daysInMonth[month1 -1])
        {
            t1.day1 = (t1.day1-*daysInMonth);
            t1.month1 = month1 +1;
            if (month1 > 12)
            {
                t1.month1 = 1;
                t1.year1 = year1 +1;
            }
        }
        printf("Please enter the amount of tools needed!\n");
        printf("\nProjector\t:");
        scanf("%d",t1.quantity1);
        tools1=tools1-t1.quantity1;
        printf("\nProjection Screen\t:");
        scanf("%d",t1.quantity2);
        tools2=tools2-t1.quantity2;
        printf("\nSound System\t:");
        scanf("%d",t1.quantity3);
        tools3=tools3-t1.quantity3;
        fprintf(fp,"PIC\t\t:%s %s %s %s",t1.fName1,t1.fName2,t1.lName1,t1.lName2);
        fprintf(fp,"Due date\t\t: %d/%d/%d",t1.day1,t1.month1,t1.year1);
        fpritnf(fp,"Projector\t\t: %d",t1.quantity1);
        fprintf(fp,"Projection Screen\t\t: %d",t1.quantity2);
        fprintf(fp,"Sound System\t\t: %d",t1.quantity3);
    }
    fclose(fp);
}
void display()
{
    FILE *fp;
    fp=fopen("LIBSUMP.txt","r");
    while((c=getc(fp))!=EOF)
    {
        printf("%c",c);
    }
    fclose(fp);
    getch();
    system("cls");
}

main.c