Yi-Tseng

// 可以只寫單一if
if(條件){
    運算式
}

// 也可以省略大括號，但是只會執行一行
if(條件)
    運算式;

// 也可以寫if / else

Yi-Tseng

int a = 1;

printf("%d\n",a++);

int b = 1;

printf("%d\n",++b);

Yi-Tseng

#include <stdio.h>
#include <string.h>
#include <ctype.h>
int main(int argc, const char * argv[])
{
    int r,c;
    char* a = "vs lbh pna frr guvf zrffntr, jrypbzr gb wbva gghpfp!";
    for(r=1;r<26;r++){
        for(c=0;c<strlen(a);c++){
            if(isalpha(a[c])){

Yi-Tseng

from time import sleep
import RPi.GPIO as GPIO
GPIO.setwarnings(False)
GPIO.setmode(GPIO.BOARD)
GPIO.setup(13, GPIO.OUT)
GPIO.setup(15, GPIO.OUT)
GPIO.setup(16, GPIO.OUT)
GPIO.output(13,False)
GPIO.output(15,False)
GPIO.output(16,False)

Yi-Tseng

#include<stdio.h>
#include <string.h>
#include<stdlib.h>
#include <sys/stat.h>
int main(){
    FILE* file_a;
    FILE* file_b;
    FILE* file_c;
    char buffer[1024];
    

Yi-Tseng

#include<stdio.h>
#define M 5
#define N 6
int max(a,b){
    return a>=b?a:b;
}
int main(){
    int x[M] = { 1, 1, 2, 3, 2 };
    int y[N] = { 2, 2, 4, 3, 1, 2 };
    int c[M][N];

Yi-Tseng

from threading import Thread                                                    
import RPi.GPIO as GPIO
x = 0 

def keyListen():
    stat = False
    global x
    while 1:
        if GPIO.input(11) and not stat:
            stat = True

Yi-Tseng

#include <stdio.h>
#define swap(x,y) int t=x;x=y;y=t;
typedef unsigned long long ull;
ull foo(int a,int b){
    ull cycle;
    ull c,n;
    ull max = 0;
    if(a>b){
        swap(a,b)
    }

Yi-Tseng

#include <stdio.h>
#include <string.h>
int main(int argc, const char * argv[])
{
    char num[1010] = {0};
    
    while(scanf("%s",num)!=EOF){
        if(strcmp(num, "0") == 0){
            break;
        }

Yi-Tseng

#include <stdio.h>
#include <ctype.h>
struct node{
    int cn;
    char c;
};
typedef struct node Node;
int main(int argc, const char * argv[])
{
    Node cc[26];