# 師大資工 2022 Fall Comuter Programming(I) HW02
---
[TOC]
## HW0201
>分成兩個函數分開處理，
---
```c=1
#include<stdio.h>
#include<stdint.h>
double leibniz(int32_t n){
double ret = 0;
for(int32_t i=1; i<=n; i++){
if(i%2 == 1){
ret += 4.0/(2*i-1);
}else{
ret -= 4.0/(2*i-1);
}
}
return ret;
}
double nila(int32_t n){
double ret = 3;
if(n == 1){
return ret;
}
for(int32_t i = 2; i<=n; i++){
if(i%2 == 1){
ret -= 4.0/((2*i-2)*(2*i-1)*2*i);
}else{
ret += 4.0/((2*i-2)*(2*i-1)*2*i);
}
}
return ret;
}
double d(double n){
int32_t pi = 3.14159265358979323846;
if(n > pi){
return n - pi;
}else{
return pi - n;
}
}
int main(){
uint16_t n = 0;
printf("Please enter n(16-bits unsigned): ");
scanf("%hd", &n);
for(int32_t i=1; i<=n; i++){
printf("n = %d:\n", i);
printf(" Grgory-Leibniz series: %lf (%lf)\n", leibniz(i), d(leibniz(i)));
printf(" Nilakantha series: %lf (%lf)\n\n", nila(i), d(nila(i)));
}
}
```
## HW0202
```c=1
#include<stdio.h>
#include<stdint.h>
#include<stdbool.h>
int32_t m = 0, d = 0, y = 0;
int32_t sy = 0, sm = 0, sd = 0;
int32_t ey = 0, em = 0, ed = 0;
void reverse(int32_t yr){
int32_t y1 = yr/1000;
int32_t y2 = yr%1000/100;
int32_t y3 = yr%100/10;
int32_t y4 = yr%10;
m = 10*y4 + y3;
d = 10*y2 + y1;
y = yr;
}
bool legal(int32_t y, int32_t m, int32_t d){
bool ret = true;
if(y == 9220){
return true;
}
if(m < 1 || m > 12 || d < 1){
ret = false;
}else{
if(m == 1 || m == 3 || m == 5 || m == 7 || m == 8 || m == 10 || m == 12){
if(d > 31){
ret = false;
}
}else if(m == 4 || m == 6 || m == 9 || m == 11){
if(d > 30){
ret = false;
}
}else{
if(d > 28){
ret = false;
}
}
}
return ret;
}
int main(){
printf("Start date: ");
scanf("%d-%d-%d", &sm, &sd, &sy);
printf("End date: ");
scanf("%d-%d-%d", &em, &ed, &ey);
bool sge = true, leg = true;
if(!legal(sy, sm, sd) || !legal(ey, em, ed)) leg = false;
if(sy > ey){
sge = false;
}else{
if(sm > em){
sge = false;
}else{
if(sd > ed){
sge = false;
}
}
}
if(!sge || !leg){
printf("error input");
}else{
int32_t counter = 0;
for(int32_t i=sy; i<=ey; i++){
reverse(i);
if(legal(y, m, d)){
printf("%02d-%02d-%04d\n", m, d, y);
counter++;
}
}
printf("%d\n", counter);
}
}
```
## HW0203
```c=1
#include<stdio.h>
#include<stdint.h>
#include<math.h>
int main(){
uint32_t n = 0;
printf("Please enter a number: ");
scanf("%d", &n);
int32_t sum = 0, ex = 0, t = 0;
if(n < 10){
sum = n;
}else{
while(n >= 10){
ex = 0;
sum = 0;
while((int32_t)(n / pow(10.0, ex)) != 0){
ex++;
}
ex--;
for(; ex >= 0; ex--){
int32_t t = (int32_t)(pow(10.0, ex));
if(t != 1){
printf("%d + ", n/t);
}else{
printf("%d ", n/t);
}
sum += n / t;
n = n % t;
}
printf("= %d", sum);
printf("\n");
n = sum;
}
}
printf("Final: %d", sum);
}
```
## HW0204
```c=1
#include<stdio.h>
#include<stdint.h>
#include<math.h>
double round(double n){
int t = 0;
n *= 100;
n += 0.5;
t = (int32_t)n;
return t/100.0;
}
int32_t decimal(double n){
int32_t ret = 0;
ret = (int32_t)(n *100);
return ret%100;
}
void printcomma(int n){
if(n < 1000){
printf("%d", n);
return;
}
printcomma(n/1000);
printf(",%03d", n%1000);
}
int main(){
int32_t ly = 0, lm = 0, lt = 0, pt = 0, i = 0, ap = 0;
double r = 0, p = 0;
printf("Loan Date: ");
scanf("%d.%d", &ly, &lm);
printf("Loan Price: ");
scanf("%lf", &p);
printf("Loan Term (yrs): ");
scanf("%d", <);
printf("Interest Rate: ");
scanf("%lf", &r);
printf("Property Tax: ");
scanf("%d", &pt);
printf("Insurance (/m): ");
scanf("%d", &i);
printf("Additional Payment (/m): ");
scanf("%d", &ap);
printf("--- Output ---\n");
if(p < 10000 || r < 0){
printf("error input");
}
r = r / 1200.0;
int32_t n = 0, total = 0;
n = 12 * lt;
total = (int32_t)(p * (r * pow(1+r, n))/(pow(1+r, n)-1) + pt + i);
printf("Total monthly payment: %d\n", total);
double interest = 0, principal = 0, remaining = 0;
for(int32_t ctr = 0; ctr < n; ctr++){
interest = p * r;
principal = total - (pt + i) - p*r + ap;
remaining = p - principal;
if(lm > 12){
lm = 1; ly += 1;
}
if(ctr == n-1){
principal = p * 100;
principal = principal / 100.0;
remaining = 0;
}
int32_t d_p = 0, d_i = 0, d_r = 0;
printf("%04d,%02d) ", ly, lm);
printf("Principal: ");
d_p = decimal(principal);
printcomma((int32_t)principal);
printf(".%02d, ", d_p);
printf("Interest: ");
interest = round(interest);
d_i = decimal(interest);
printcomma((int32_t)interest);
printf(".%02d, ", d_i);
printf("Remaining: ");
remaining = round(remaining);
d_r = decimal(remaining);
printcomma((int32_t)remaining);
printf(".%02d\n", d_r);
p = remaining;
lm++;
}
}
```
## HW0205
```c=1
#include<stdio.h>
#include<stdint.h>
#include<stdbool.h>
int32_t l = 0, w = 0, h = 0, m = 0;
void paloc(int32_t amount){
int32_t blank_counter = w-1, c_counter = 0;
for(int32_t i = 0; i<amount; i++){
//first layer
for(int32_t fl = 0; fl < blank_counter; fl++){
printf(" ");
}
for(int32_t sharp = 0; sharp < l*2; sharp++){
printf("#");
}
printf(" ");
}
//next layer
blank_counter -= 1;
printf("\n");
// top layer
bool h_end = false;
int32_t dc = 0;
while(blank_counter > 0){
for(int32_t i = 0; i<amount; i++){
for(int32_t ctr = 0; ctr < blank_counter; ctr++){ //print blank part
printf(" ");
}
printf("#"); //first sharp
for(int32_t ctr = 0; ctr < 2*l-2; ctr++){ //first color a
printf("\033[47m \033[m");
}
printf("#"); //second sharp
for(int32_t ctr = 0; ctr < c_counter; ctr++){ //second color c
printf("\033[41m \033[m");
}
printf("# ");//next cuboid
if(h_end){
for(int32_t ctr=0; ctr < dc-2; ctr++){
printf(" ");
}
}
}
blank_counter--;
if(c_counter < h-2){
c_counter++;
}else if(c_counter < h){
h_end = true;
}
printf("\n");
dc++;
}
//top side
for(int32_t i = 0; i<amount; i++){
for(int32_t sharp = 0; sharp < l*2; sharp++){
printf("#");
}
for(int32_t ctr = 0; ctr < c_counter; ctr++){
printf("\033[41m \033[m");
}
printf("# ");
if(w > h){
for(int32_t ctr = 0; ctr < dc-2 ; ctr++){
printf(" ");
}
}
}
printf("\n");
//front side
if(w >= h){
c_counter--;
}
while(c_counter >= 0){
for(int32_t ctr = 0; ctr < amount; ctr++){
printf("#");
for(int32_t ctr = 0; ctr < 2*l-2; ctr++){
printf("\033[44m \033[m");
}
printf("#");
for(int32_t ctr = 0; ctr < c_counter; ctr++){
printf("\033[41m \033[m");
}
printf("#");//boarden
for(int32_t ctr = 0; ctr < w-2-c_counter; ctr++){
printf(" ");
}
printf(" ");
}
printf("\n");
c_counter--;
}
//bottom side
for(int32_t ctr = 0; ctr < amount; ctr++){
for(int32_t bl = 0; bl < l*2; bl++){
printf("#");
}
for(int32_t bc = 0; bc < w-c_counter-1; bc++){
printf(" ");
}
}
printf("\n\n");//end.
}
int main(){
printf("Welcome to Cuboid Super Infinity Exporter\n");
printf("Please enter Length, Width, and Height of the cuboid\n");
printf("Length: ");
scanf("%d", &l);
printf("Width: ");
scanf("%d", &w);
printf("Height: ");
scanf("%d", &h);
printf("How many cuboids do you want to generate?\n");
printf("Amount: ");
scanf("%d", &m);
//the space that a cuboid need is w+2*l-1.
//and it needs one space between two cuboids.
int32_t len = w + 2*l - 1;
if(len > 80 || w < 4 || l < 4 || h < 4 || m < 0){
printf("error input");
}
else{
int32_t m_pl = 0;
if(w + 2*l != 81){
m_pl = 80/(len+1); //amount per line
}else{
m_pl = 81/(len); //amount per line
}
if(m_pl == 0){
m_pl = 1;
}
int32_t lines = m/m_pl; //lines
int32_t less = m%m_pl; //less
for(int i = 0; i < lines; i++){
paloc(m_pl);
}
if(less != 0){
paloc(less);
}
}
}
```
> [name=5xooooo]
> [time=Sat, Oct 29, 2022 10:15 AM]
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