I'm new to C language and have been staring at my (probably abysmal) code for a while and can't figure out what's off about it.
Can anyone check my mistake :(
On compiler in said that error: 'else' without a previous 'if' else //[HIGHLIGHTED] ^~~~ , I have highlighted in comment [HIGHLIGHTED] the error lines to help you searching the line
#include <stdio.h> #include <string.h> void main() { int option; option = 0; while (option != 10)//For option purpose { char blood_type[5],next;// blood type purpose char name[20];//name purpose int count = 1;//turn on loop(True) float discount, amountToBePaid, bill; int amount; int trial = 0, PIN, age; float mass, generate; printf("\n\n\t\t\t\tNational Blood Center x Tenaga Nasional Berhad Campaign"); printf("\n\n--------------------------------------------------------------------------------------------------------------------------"); printf("\n\t\t\t\tThank you for joining our campaign!"); printf("\n\t\t\t\tIf you donate :"); printf("\n\t\t\t\t ____________________________________ "); printf("\n\t\t\t\t| Volume | Discount given |"); printf("\n\t\t\t\t ____________________________________"); printf("\n\t\t\t\t| 150 ml - 300 ml | 16 |"); printf("\n\t\t\t\t| 301 ml - 400 ml | 20 |"); printf("\n\t\t\t\t| 401 ml - higher | 25 |"); printf("\n\t\t\t\t ____________________________________"); printf("\n\n ! All contributor are advise to NOT donate your blood for over 470ml"); printf("\n\nDonator Condition:"); printf("\n1. Aged between 18 and 60 years old (for those less than 18, written consent from parents or legal guardian is required)"); printf("\n2. Body weight of at least 45 kg."); printf("\n3. In good physical and mental health with no chronic medical illness."); printf("\n4. Not on long term medications and has not been intoxicated by alcohol within 24 hours prior to donation."); printf("\n\nDo you wish to continue?\n"); // this part ask user if they want to continue or not printf("1.Yes\n"); printf("2.Cancel"); printf("\n\nEnter one of the above : "); //option, user are ask whether he/she wants to continue or not scanf("%d", &option); switch (option)// if the user wants to continue { case 1: printf("Enter age:"); // security measurement, the user is ask to enter the his/her age/mass for confirmed that he/she fulfill all of the recuirment scanf("%d", &age); printf("Enter mass [in two decimal place]:"); scanf("%f", &mass); if( age >=18 && age <=60) if(mass > 60.00) { generate = age*mass; //a generated security code that derived from multiplication of age & mass (for increase the security measurement) printf("Your code is %.2f", generate); //display generated code } else { printf("You may not fulfill all the conditions, try again later."); // if the user not fulfill all the conditions, the program will end return ; } do { printf("\nInsert the generate code:"); scanf("%d", &PIN); trial++; }while (PIN != generate && trial != 3); if (PIN == generate) //[HIGHLIGHTED] printf("\nEnter your name: ");// next step to start the program scanf("%s", name); printf("\nPlease Enter Your Blood Type: "); scanf("%s", blood_type); printf("Please enter amount of your total blood donation (in ml) :"); scanf("%d", &amount); printf("Enter your current electricity bill: Rm"); scanf("%f", &bill); printf("\n"); printf("loading");//just a loading (no animation) int value = 5; while (value > 0) { printf("."); value--; } while (count == 1 ) { if ((strcmp(blood_type,"A")==0)||(strcmp(blood_type,"a")==0)) { printf("\nYour Blood Type is %s", blood_type); count = 0 ; //turn off loop (False) } else if((strcmp(blood_type,"B")==0)||(strcmp(blood_type,"b")==0)) { printf("\nYour Blood Type is %s", blood_type); count = 0 ; //turn off loop (False) } else if((strcmp(blood_type,"AB")==0)||(strcmp(blood_type,"ab")==0)) { printf("\nYour Blood Type is %s", blood_type); count = 0 ; //turn off loop (False) } else if((strcmp(blood_type,"o")==0)||(strcmp(blood_type,"O")==0)) { printf("\nYour Blood Type is %s", blood_type); count = 0 ; //turn off loop (False) } else { printf("\n-------------\n"); printf("Invalid input\n"); printf("-------------\n"); count = 0;//turn off loop (False) main(); if(amount<150) { printf("\nYou have to paid: Rm%0.2f", bill); printf("\nDonate for over 150 ml to enjoy a discount cut!"); } else { if(amount>=150 && amount<=300) { discount = (bill*16)/100; amountToBePaid = bill-discount; printf("\nAfter applying the discount, you have to paid: Rm%0.2f", amountToBePaid); } else if(amount>300 && amount<=400) { discount = (bill*20)/100; amountToBePaid = bill-discount; printf("\nAfter applying the discount, you have to paid: Rm%0.2f", amountToBePaid); } else if(amount>400 && amount<600) { discount = (bill*25)/100; amountToBePaid = bill-discount; printf("\nAfter applying the discount, you have to paid: Rm%0.2f", amountToBePaid); } printf("\nThank you %s for your contribution!", name); break; else //[HIGHLIGHTED] printf("\nSorry, Maximum attempt has been exceded. Please refer officer on duty." ); case 2: return ; default: printf("Invalid input\n"); } } } } } } 
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