Code:
#include <stdio.h>
#include <conio.h>
#include <string.h>
void Hello(void){
printf("Hello and welcome to Demigod's Electronic Loan Amortization Calculator. Here we will make a table for you when given the amount of the loan, the interest rate, and the number pf payments you wish to have.\n\nPress any key to continue...");
getch();
system("cls");
printf("Okay.. we will first need some basic information about you and your loan.");
}
int Info(void){
int age;
printf("\n\nInput your age:\t");
scanf("%d", &age);
if(age<18){
printf("\nSorry, you are not allowed to avail a loan.");
return 0;
}
}
void Select(void){
printf("\n\nSelect the number of periods you want to make to pay this loan off:");
printf("\n\t\t\t[1] - MONTHLY");
printf("\n\t\t\t[2] - QUARTERLY");
printf("\n\t\t\t[3] - SEMI-ANNUALLY");
printf("\n\t\t\t[4] - ANUUALLY");
printf("\n\t\t\t[0] - Exit");
}
float Mon(void){
float Monpay, Intpay, lg, i;
Monpay=lg/36;
Intpay=(lg*i)/36;
printf("\nMonthly Payment:\t%.2f", Monpay);
printf("\nInterest Payment:\t%.2f", Intpay);
printf("\nTotal Monthly Payment:\t%.2f", Monpay+Intpay);
return Monpay, Intpay;
}
float Quar(float amt, float interest){
float Quarpay, Intpay, lg, i;
Quarpay=lg/12;
Intpay=(lg*i)/12;
printf("\nMQuarterly Payment:\t%.2f", Quarpay);
printf("\nInterest Payment:\t%.2f", Intpay);
printf("\nTotal Quarterly Payment:\t%.2f", Quarpay+Intpay);
return Quarpay, Intpay;
}
float Semi(float amt, float interest){
float Semipay, Intpay, lg, i;
Semipay=lg/6;
Intpay=(lg*i)/6;
printf("\nSemi-Annual Payment:\t%.2f", Semipay);
printf("\nInterest Payment:\t%.2f", Intpay);
printf("\nTotal Semi-Annual Payment:\t%.2f", Semipay+Intpay);
return Semipay, Intpay;
}
float Annual(float amt, float interest){
float Annualpay, Intpay, lg, i;
Annualpay=lg/3;
Intpay=(lg*i)/3;
printf("\nAnnual Payment:\t%.2f", Annualpay);
printf("\nInterest PAyment:\t%.2f", Intpay);
printf("\nTotal Annual Payment:\t%.2f", Annualpay+Intpay);
return Annualpay, Intpay;
}
main(){
int age, styp, option;
float PAI, lg, i, Monpay, Quarpay, Semipay, Annualpay;
char lt, name[50];
Hello();
printf("\n\nInput your full name:\t");
gets(name);
Info();
do{
printf("\nInput type of school (Press '1' if PRIVATE, '2' if PUBLIC):\t");
scanf("%d", &styp);
if(styp<1||styp>2){
printf("Erroneous input. Press 1 or 2 only.");
}
}while(styp<1||styp>2);
printf("\nInput Parent's Annual Income:\t");
scanf("%f", &PAI);
if(styp==2){
if(PAI<40000){
do{
printf("\n\nInput Loan Amount (15,000-25,000 only):\t");
scanf("%f", &lg);
if(lg<15000||lg>25000){
printf("\nYou are not allowed to avail a loan below 15,000 or greater than 25,000. \nPlease enter another amount.");
}
}while(lg<15000||lg>25000);
i=0.06;
lt='B';
}else{
do{
printf("\n\nInput Loan Amount (25,000-45,000 only):\t");
scanf("%f", &lg);
if(lg<25000||lg>45000){
printf("\nYou are not allowed to avail a loan below 25,000 or greater than 45,000. \nPlease enter another amount.");
}
}while(lg<25000||lg>45000);
i=0.10;
lt='A';
}
}else
if(styp==1){
if(PAI<40000){
do{
printf("\n\nInput Loan Amount (45,000-65,000 only):\t");
scanf("%f", &lg);
if(lg<45000||lg>65000){
printf("\nYou are not allowed to avail a loan below 45,000 or greater than 65,000. \nPlease enter another amount.");
}
}while(lg<45000||lg>65000);
i=0.08;
lt='B';
}else{
do{
printf("\n\nInput Loan Amount (65,000-85,000 only):\t");
scanf("%f", &lg);
if(lg<65000||lg>85000){
printf("\nYou are not allowed to avail a loan below 65,000 or greater than 85,000. \nPlease enter another amount.");
}
}while(lg<65000||lg>85000);
i=0.12;
lt='A';
}
}
do{
system("cls");
do{
Select();
printf("\n\nInput your choice:\t");
scanf("%d", &option);
if(option<0 || option>4);
printf("\nWrong input. Only 0-4 is allowed.");
}while(option<0 || option>4);
system("cls");
switch(option){
case 1: Mon();
break;
case 2: Quarpay = Quar(lg, i);
break;
case 3: Semipay = Semi(lg, i);
break;
case 4: Annualpay = Annual(lg, i);
break;
}
printf("\n\nPress any key to continue...");
getch();
}while(option != 0);
printf("\nLoan type:\t%c", lt);
printf("\nLoan granted:\t%.2f", lg);
printf("\nAnnual interest rate:\t%.2f", i);
}
