Thread: Is there away to call a next program C program and match user input with the current

Code:

#include <stdio.h>
#include <stdlib.h>
#include <time.h>
int main()
{
    FILE *fptr;
    char ans;
    char buff[100];
    char name[200];
    char address[500];
    char telephone[17];
    char sex[23];
    char dateOfBirth[100];
    unsigned char jobDescription[2000000];
    float amountOfMoney,discount,d_price;
    int x,y;
    time_t now = time(0);


for(x = 1; x<=1000;x++){
printf("\nENTER ALL CUSTOMER INFORMATION        BELOW.\n");
    
fptr = fopen("C:\Customer's Info.txt", "a+");
    
printf("\n\nPlease Enter the Customer's Name: ");
   
 fflush(stdin);
   
 scanf(" %[^\n]", &name);
   
 fprintf(fptr,"Customer Number: %i\n",x);
   
 fprintf(fptr,"Customer Name: %s\n",name);
   
 printf("\nPlease Enter Customer's Gender: ");
   
 fflush(stdin);
   
 scanf("%[^\n]",&sex);
   
 fprintf(fptr,"Customer Gender: %s\n",sex);
   
 printf("\nPlease Enter Customer's Date Of Birth: ");
   
 fflush(stdin);
   
scanf("%[^\n]",&dateOfBirth);
   
 fprintf(fptr,"Customer D.O.B: %s\n",dateOfBirth);
  
  printf("\nPlease Enter Customer's Current Address: ");
  fflush(stdin);
 
   scanf("%[^\n]",&address);
   
 fprintf(fptr,"Customer Address: %s\n",address);
  
  printf("\nPlease Enter Customer's Telephone Number: ");
  
  fflush(stdin);
  
  scanf("%[^\n]",&telephone);
  
  fprintf(fptr,"Customer PhoneNumber: %s\n",telephone);
  
  printf("\nPlease Enter The Customer's Job Description: ");
   
 fflush(stdin);
   
 scanf("%[^\n]",jobDescription);
   
 fprintf(fptr,"Customer Complaint: %s\n",jobDescription);
    
printf("\nPlease Enter The Amount The Customer Paid: ");
   
 fflush(stdin);
   
 scanf("%f",&amountOfMoney);
    
fprintf(fptr,"Money Paid By Customer: $%.2f\n",amountOfMoney);
   
 printf("\nIs %s Getting Any Discount? ",name);
    
fflush(stdin);
    
scanf(" %c",&ans);
        

if(ans == 'y'|| ans == 'Y'){
            printf("\nEnter the Discount off in percentage (dont use %% just enter the digits): ");
           
 fflush(stdin);
           
 scanf("%f",&discount);
           
 d_price = amountOfMoney - (discount/100.00 * amountOfMoney);
           
 fprintf(fptr,"Customer Discount: %.2f%% off \nDiscounted 

Price: $%.2f \n", discount, d_price);
    }else{
        printf("\n");
    };
 strftime(buff,100,"%Y-%m-%d %H:%M:%S.000", localtime(&now));
    fprintf(fptr,"TimeStamp: %s\n\n\n",buff);
    fclose(fptr);
}

    getchar();
    return 0;
}

i want to search in the txt output file based on previous history of the user input for a customer based on gender,name,and D.O.B. Next step is to make the C program open a next C program which should require a user password,user name,user gender,and date this must be matched to the first open program to create a user and give that user name to the txt file and give that txt file a password so only that user can access it when the txt is created.The created txt file shouldn't be able to be edited neither be copied anything goes wrong in the document it must only be corrected from the cli with a search and find option to the program which is a next C program specialized for searching and replacing user input within a specified file.

So any help am just a beginner but my head hurts at night because i have too much crazy ideas its like am almost compelled to program and also to come up with problems which i cant even solve myself so if you understand what am saying just tell me if that's possible please.

And also state if am dumb because i can only think about changing the future i need to know if am thinking good or bad why i choose C programming is because i heard it the hardest to master and me on the other hand love challenge so i want something that people call impossible to make it possible.

altho am a beginner \\ doesnt work whenever i use it my txt document never gets created but still thanks for the heads up and am good at OOP never knew C has one i def have to go learn it well javascript and php me taught me OOP along with 14 tutorials of JAVA which i find lame.