//adam foster
//10/15/2019
#include <stdio.h>
#include <string.h>
int main(void){
  FILE *ofPtr, *tfPtr, *nfPtr, *oPtr, *tPtr;
  ofPtr = fopen("oldmast.dat", "r");
  tfPtr = fopen("trans.dat", "r");
  nfPtr = fopen("newmast.dat", "w");

  oPtr = fopen("oldmast.dat", "r");
  tPtr = fopen("trans.dat", "r");
  int mastNum;
  int curNum;
  char name[25];
  char lname[25];
  float curBalance;
  float dollarAmount;
  int matchNum;
  float matchDollar;
  char matchName[25];
  char matchlName[25];
  int found = 0;
  while(fscanf(tfPtr, "%d %f\n", &curNum, &dollarAmount) == 2){ //looping through transactions
    //printf("%d %f\n", curNum, dollarAmount); //just displaying transaction info
    while(fscanf(ofPtr, "%d %s %s %f\n", &mastNum, &name, &lname, &curBalance) > 0){ //looping through old master
      //printf("%d\n", mastNum);
      if(mastNum == curNum){ //if the trans num == master num, we have found a match
    found = 1;
    matchNum = mastNum;
    matchDollar = curBalance;
    strcpy(matchName, name);
    strcpy(matchlName, lname);
    printf("Match found\n");
    //printf("Info: %d %s %s %.2f", matchNum, matchName, matchlName, matchDollar);
      }
    }
    if(found == 0) //if we never found a match, say something
      printf("Unmatched transaction record for account number: %d\n", curNum);
    if(found == 1){ //if we found a match, reset found to 0 for the next loop
      found = 0;
      //printf("%d\n", balance);
      fprintf(nfPtr, "%d %s %s %.2f\n", matchNum, matchName, matchlName, matchDollar + dollarAmount);
    }
  }
  found = 0; //resetting found
  while(fscanf(oPtr, "%d %s %s %f\n", &mastNum, &name, &lname, &curBalance) > 0){ //now we are comparing the old mast to all the trans, as opposed to before
    printf("%d %s %s %f\n", mastNum, name, lname, curBalance);
    while(fscanf(tPtr, "%d %f\n", &curNum, &dollarAmount) > 0){
      printf("%d %d\n", mastNum, curNum);
      if(mastNum == curNum){
      //if the trans num == master num, we have found a match
      found = 1;
      printf("Match found\n");
      //printf("Info: %d %s %s %.2f", matchNum, matchName, matchlName, matchDollar);
      }
    }
    if(found == 0){
      printf("%d %s %s %.2f\n", mastNum, name, lname, curBalance);
      fprintf(nfPtr, "%d %s %s %.2f\n", mastNum, name, lname, curBalance);
    }
    if(found == 1){
      found = 0;
    }
  }



  fclose(ofPtr);
  fclose(tfPtr);
  fclose(nfPtr);
  fclose(oPtr);
  fclose(tPtr);
}