I don't know how to fix this.
Here's my code. The error's at the last line.
Code:#include <stdio.h> #include <string.h> #include <ctype.h> #define max_con 30 void add_contact(); void edit_contact(); void del_contact(); void list_contact(); char addressbook[5][30][30]; char mode; int address_count = 0, current_record = 0; int main(void) { do { printf("Welcome: This is an address book program brought to you by\nJohn Ranniel G. Sison\n"); printf("Select the mode you want\n"); printf("1 -> Add contact\n"); printf("2 -> Edit contact\n"); printf("3 -> Delete contact\n"); printf("4 -> List contact\n"); printf("5 -> Exit the program\n"); scanf("%c", &mode); switch(mode){ //switch (determine which action to take) case '1': add_contact(); break; case '2': edit_contact(); break; case '3': del_contact(); break; case '4': list_contact(); break; case '5': return 0; default: while(mode<5&&mode>=1) printf("Please choose from the given options.\n"); scanf("%c", &mode); } } while(mode != '5'); } void add_contact() { char entry[30]; int i, length, flag; if(mode=='1') if (address_count == max_con){ //checks if the number of contacts is has not yet reached the maximum which is max_con printf("Sorry, the %d entry limit has been reached.\nChoose other functions other than '1'", max_con); return; } else { address_count++; //variable for number of entries current_record = address_count-1; //variable for the current entry length = strlen(addressbook[0][current_record]); //asks the user to input the entry's first name (Alphabet, spaces) and it must not exceed 20 characters do { printf("Enter the first name:"); //asks the user to input the first name of the entry scanf("%s", addressbook[0][current_record]); length = strlen(addressbook[0][current_record]); //gets the length of the input (should be less than 20) for(i=0; i<=20; i++) { if(isalpha((addressbook[0][current_record][i])||addressbook[0][current_record][i]==' ')&&length<20) { //checks if the input characters in first name are alphabets/a space and strlen is less than 20 flag = 1; break; // } //exits once it sees that the characters are alpha numeric else { printf("You can only use alphabets and space and a maximum of 20 characters. First name?\n"); //puts a message that prompts the user to enter alphabets/space alone break; } } } while(flag!=1); //asks the user to input the surname of the entry (Alphabet, spaces) and it must not exceed 20 characters flag = 0; do { printf("Enter the surname:"); // scanf("%s", addressbook[1][current_record]); length = strlen(addressbook[1][current_record]); //gets the length of the input (should be less than 20) for(i=0; i<=20; i++){ if(isalpha((addressbook[1][current_record][i])||addressbook[1][current_record][i]==' ')&&length<20) { //checks if the input characters in surname are alphabets/a space and strlen is less than 20 flag = 1; break; // } //exits once it sees that the characters are alpha numeric else { printf("You can only use alphabets and space and a maximum of 20 characters. First name?\n"); //puts a message that prompts the user to enter alphabets/space alone break; } } } while(flag!=1); //asks the user to input the degree program of the entry(Alphabet, spaces) and it must not exceed 20 characters flag = 0; do{ printf("Enter the Degree Program the entry's in:"); scanf("%s", addressbook[2][current_record]); length = strlen(addressbook[2][current_record]); //gets the length of the input (should be less than 20) for(i=0; i<=20; i++) { if(isalpha((addressbook[2][current_record][i])||addressbook[2][current_record][i]==' ')&&length<20) { //checks if the input characters in the degree program are alphabets/a space and strlen is less than 20 flag = 1; break; } //exits once it sees that the characters are alpha numeric else { printf("You can only use alphabets and space and a maximum of 20 characters. First name?\n"); //puts a message that prompts the user to enter alphabets/space alone break; } } } while(flag!=1); flag = 0; do { printf("Enter the entry's Student ID:"); scanf("%s", addressbook[3][current_record]); length = strlen(addressbook[3][current_record]); //gets the length of the input (should be 10) addressbook[3][current_record]; for(i=0; i<10; i++) { if((addressbook[3][current_record][i]>='0')&&(addressbook[3][current_record][i]<'4')||(addressbook[3][current_record][i]>'4')&&(addressbook[3][current_record][i]<=9)) //checks if the input characters are only numbers and the 4th element of the array is a '-' if((addressbook[3][current_record][4]=='-')&&(strlen(addressbook[3][current_record])=='10')) { //checks if the input characters are only numbers and the 4th element of the array is a '-' flag = 1; break; } else { //prints restrictions/parameters for the student ID printf("The format of your input should be like this:\nxxxx-yyyyy\nWhere: the x's and y's represent ONLY numbers"); break; } } } while(flag!=1); flag = 0; do { printf("Enter the entry's cellphone number:"); scanf("%s", addressbook[4][current_record]); length = strlen(addressbook[4][current_record]); //gets the length of the input (should be 10) //checks if the input is composed of 11 elements wherein the first 2 are 0 and 9 respectively for(i=0; i<11; i++){ if((addressbook[4][current_record][0] == '0')&&addressbook[4][current_record][1] == '9'||(addressbook[4][current_record][i]>='0')&&(addressbook[4][current_record][i]<='9')&&(length)=='11') { flag = 1; break; } else { //prints restrictions/parameters for the cellphone number printf("The format of the input is: 09xxyyyyyyy\nwherein x and y are integers from 0 -> 9\n"); break; } } } while(flag!=1); flag = 0; do { printf("Enter the entry's email address:"); scanf("%s", addressbook[5][current_record]); length = strlen(addressbook[5][current_record]); //gets the length of the input (should be 10) //checks if input is composed of letters//digits/underscores/dots/@ &max of 30 characters for(i=0; i<30; i++){ if((addressbook[5][current_record][i]>='A')&&(addressbook[5][current_record][i]<='z')||(addressbook[5][current_record][i]=='.')|| (addressbook[5][current_record][i]=='@')||(addressbook[5][current_record][i]=='_')||(addressbook[5][current_record][i]>='0')&&(addressbook[5][current_record][i]<='9')&&length<=30) { flag = 1; break; } else { //prints restrictions/parameters for the cellphone number printf("The email address entry can only be composed of letters, numbers, '.', '_' and '@' \n"); break; } } } while(flag!=1); } //end add_contact function void edit_contact() { char i, j, k, flag, length; int num; printf("Edit which entry?\n"); printf("------------------\n"); printf("Enter the number of the entry you want to edit:"); scanf("%d", &num); //edits first name of entry do { printf("Edit the first name:"); //asks the user to input the first name of the entry scanf("%s", addressbook[0][num]); length = strlen(addressbook[0][num]); //gets the length of the input (should be less than 20) for(i=0; i<=20; i++) { if(isalpha((addressbook[0][num][i])||addressbook[0][num][i]==' ')&&length<20) { //checks if the input characters in first name are alphabets/a space and strlen is less than 20 flag = 1; break; } //exits once it sees that the characters are alpha numeric else { printf("You can only use alphabets and space and a maximum of 20 characters. First name?\n"); //puts a message that prompts the user to enter alphabets/space alone break; } //end else } } while(flag!=1); //edits surname //asks the user to input the surname of the entry (Alphabet, spaces) and it must not exceed 20 characters flag = 0; do { printf("Edit the surname:"); // scanf("%s", addressbook[1][num]); length = strlen(addressbook[1][num]); //gets the length of the input (should be less than 20) for(i=0; i<=20; i++) { if(isalpha((addressbook[1][num][i])||addressbook[1][num][i]==' ')&&length<20) { //checks if the input characters in surname are alphabets/a space and strlen is less than 20 flag = 1; break; // } //exits once it sees that the characters are alpha numeric else { printf("You can only use alphabets and space and a maximum of 20 characters. First name?\n"); //puts a message that prompts the user to enter alphabets/space alone break; } //end else } // end for } //end do while(flag!=1); //edits the course //asks the user to input the degree program of the entry(Alphabet, spaces) and it must not exceed 20 characters do{ printf("Enter the Degree Program the entry's in:"); scanf("%s", addressbook[2][num]); length = strlen(addressbook[2][num]); //gets the length of the input (should be less than 20) for(i=0; i<=20; i++){ if(isalpha((addressbook[2][num][i])||addressbook[2][num][i]==' ')&&length<20) { //checks if the input characters in the degree program are alphabets/a space and strlen is less than 20 flag = 1; break; // } //exits once it sees that the characters are alpha numeric else { printf("You can only use alphabets and space and a maximum of 20 characters. First name?\n"); //puts a message that prompts the user to enter alphabets/space alone break;} //end else } // end for } //end do while(flag!=1); // edits student ID of entrynumber flag = 0; do{ printf("Edit the entry's Student ID:"); scanf("%s", addressbook[3][num]); length = strlen(addressbook[3][num]); //gets the length of the input (should be 10) addressbook[3][current_record]; for(i=0; i<10; i++){ if((addressbook[3][num][i]>='0')&&(addressbook[3][num][i]<'4')||(addressbook[3][num][i]>'4')&&(addressbook[3][num][i]<=9)) //checks if the input characters are only numbers and the 4th element of the array is a '-' if((addressbook[3][num][4]=='-')&&(strlen(addressbook[3][num])=='10')) { //checks if the input characters are only numbers and the 4th element of the array is a '-' flag = 1; break; } else { //prints restrictions/parameters for the student ID printf("The format of your input should be like this:\nxxxx-yyyyy\nWhere: the x's and y's represent ONLY numbers"); break; } //end else } //end for } // end do while(flag!=1); //edit cellphone number flag = 0; do { printf("Edit the entry's cellphone number:"); scanf("%s", addressbook[4][num]); length = strlen(addressbook[4][num]); //gets the length of the input (should be 10) //checks if the input is composed of 11 elements wherein the first 2 are 0 and 9 respectively for(i=0; i<11; i++){ if ((addressbook[4][num][0] == '0') && (addressbook[4][num][1] == '9') || (addressbook[4][num][i]>='0') && (addressbook[4][num][i]<='9')) { if(length == 11){ flag = 1; break; } } else { //prints restrictions/parameters for the cellphone number printf("The format of the input is: 09xxyyyyyyy\nwherein x and y are integers from 0 -> 9\n"); break; } //end else } //end for } // end do while(flag!=1); //edit email address flag = 0; do { printf("Enter the entry's email address:"); scanf("%s", addressbook[5][num]); length = strlen(addressbook[5][num]); //checks if input is composed of letters//digits/underscores/dots/@ &max of 30 characters for(i=0; i<30; i++){ if((addressbook[5][num][i]>='A')&&(addressbook[5][num][i]<='z')||(addressbook[5][num][i]=='.')|| (addressbook[5][num][i]=='@')||(addressbook[5][num][i]=='_')||(addressbook[5][num][i]>='0')||(addressbook[5][num][i]<='9')&&length<=30){ flag = 1; break; } //prints restrictions/parameters for the cellphone number else { printf("The email address entry can only be composed of letters, numbers, '.', '_' and '@' \n"); break; } } } while(flag!=1); } void del_contact() { int del, i; printf("Enter the number of entry/contact you want to delete.\n"); printf("Contact number:"); scanf("%d", &del); //for loop to assign '/0' as the content for the given entry for(i=0; i<6; i++) { strcpy(addressbook[i][del], addressbook[6][0]); } //after deletion of the contents of the entries, address_count and current_record are both reset to 0 address_count = 0; current_record = 0; } //end delete function
Originally Posted by johnjrgs
