Can someone fix my code with the removing of the string and the searching for string because my program does not erase the string and does not search on the text file


Code:
#include<stdio.h>
#include<math.h>
#include<conio.h>
#include<stdlib.h>
#include<string.h>

main(){
       char string[16][128],temp[128],search[128], cData;
       int i=0,s=0,rep,sel,x,eq, lastline = 0, j=0, k=0;
       FILE *pFile;
       char *tmp;
       
       do{
          do{
             system("cls");
             printf("String Database\n\n");
             printf("1 - Store a String to the Database\n");
             printf("2 - Remove a String from the Database\n");
             printf("3 - View Strings in the Database\n");
             printf("4 - Search a String in the Database\n");
             printf("5 - Exit\n");
             scanf("%d",&sel);
             }while(sel!=1&&sel!=2&&sel!=3&&sel!=4&&sel!=5);
          
             if(sel==1){
                     int j=0, s=0;
                     if((pFile = fopen("strings.txt", "r+t")) != NULL){
                     //get all the strings in the file          
                         while ((cData = fgetc(pFile)) != EOF){
                               
                             if(cData != '\n'){//||cData!='\r\n'||cData!='\r'||cData!=NULL){
                                     string[s][j] = cData;
                                     j++;
                             }else{
                                     string[s][j]='\0';
                                     j=0;
                                     s++;
                             }
                         }
                     }else{
                           pFile = fopen("strings.txt", "wt");
                     }
                                       
                     for(i=0; i<s; i++){
                              printf("%s", string[i]);
                     }
                     do{                            
                         system("cls");
                         printf("Input a string: ");
                         scanf("%s",&string[s]);
                                
                         system("cls");
                         for(j=0; j<strlen(string[s]); j++){
                                  fputc(string[s][j], pFile);
                         }
                         fputc('\n', pFile);
                         printf("\nString %s successfully added\n", string[s]);
                         printf("Enter another string?\n\n");
                         printf("1 - Yes\n");
                         printf("2 - No\n");
                         scanf("%d",&rep);
                            
                         s++;
                         for(i=0; i<s; i++){
                              printf("%s", string[i]);
                              }
                     }while(rep==1 && s<16);
                     fclose(pFile);
                     
          }
          else if(sel==2){
               do{
                  system("cls");
                  printf("Select position of string to remove:\n");
               int j=0, i=0;
               if ((pFile = fopen("strings.txt", "r+t")) != NULL){
                  while ((cData = fgetc(pFile)) != EOF){
                        if(cData != '\n'){
                                 string[i][j] = cData;
                                 j++;
                        }else{
                              string[i][j]='\0';
                              j=0;
                              i++;
                        }
                  }
               }
               fclose(pFile);
               int k=0;
               
               for(k=0;k<i;k++)
                  printf("%d - %s\n",k+1,string[k]);
                  scanf("%d",&x);
                  for(i=x;i<s;i++)
                     strcpy(string[i-1],string[i]);
                     strcpy(string[s-1],temp);
                  do{
                     system("cls");
                     printf("String successfully deleted\n");
                     printf("Remove another string?\n\n");
                     printf("1 - Yes\n");
                     printf("2 - No\n");
                     scanf("%d",&rep);
                     }while(rep!=1&&rep!=2);
                  }while(rep==1);
               }
          else if(sel==3){
               system("cls");
               int j=0, i=0;
               if ((pFile = fopen("strings.txt", "r+t")) != NULL){
                  while ((cData = fgetc(pFile)) != EOF){
                        if(cData != '\n'){
                                 string[i][j] = cData;
                                 j++;
                        }else{
                              string[i][j]='\0';
                              j=0;
                              i++;
                        }
                  }
               }
               fclose(pFile);
               int k=0;
               
               for(k=0;k<i;k++)
                  printf("%d - %s\n",k+1,string[k]);
               printf("\nPress any key to return to main menu");
               getch();
               }
          else if(sel==4){
               do{
                  eq=1;
                  strcpy(search,"");
                  system("cls");
                  printf("Enter string to search: ");
                  scanf("%s",&search);
                  for(i=0;i<s;i++){
                     eq=strcmp(string[i],search);
                     printf("EQ %d",eq);
                     if(eq==0)
                     break;
                     }
                  do{
                     system("cls");
                     if(eq==0){
                     printf("String matched\n");
                     printf("Position of searched string in array is %d",i+1);
                     }
                     else{
                     printf("String not found\n");
                     printf("Search another string?\n\n");
                     printf("1 - Yes\n");
                     printf("2 - No\n");
                     scanf("%d",&rep);
                     }
                     }while(rep!=1&&rep!=2);
                  }while(rep==1);
               }
          }while(sel!=5);
       }