但是不应该表明a是integer吗

当我没说，我把函数的格式记到switch里了

function parameter才需要宣告data type, 使用variable時，例如運算或是條件判斷時，不需要額外加上data type，除非你要做casting.

谢，只不过C真学不明白，每次build都出不一样的问题

厉害！我刚想问呢，编码器告诉我char[10] is not assignable。那请问我应该把rps改成什么type呢？

我看看markdown mode 什么意思...

include <stdio.h&rt;

include <time.h&rt;

include <stdlib.h&rt;

char name[100]; char user_input[100]; char rps[100]; int rn, tr, su, sc, ua, ca; /*rn = round number (always begins as 1); tr = total round number su = score of user; sc = score of computer ua = user action; ca = computer action rps = used to represent either one of the three choices of the game

Because user_input[100] is a "string," it cannot be used to store- -what user intends to play since rock, paper, or scissors are 1, 2, or 3. I chose integers to represent user's action so that "switch" method can be utilized.*/

void get_name();

void get_name() { printf("Input your preferred username here: "); scanf(" %99s", name); }

void game_page();

void game_page() { printf("\nHello %s, \nStart a new game (a) \nChange your username (b) \nExit the game (c)\nRules (d)\n", name); printf("Enter your instruction: "); scanf(" %c", &user_input[0]); if (user_input == 'b'){ get_name(); } else if (user_input == 'c'){ printf("Exiting the program..."); exit(0); } else if (user_input == 'd'){ printf("Rock &rt; Scissors; Scissors &rt; Paper; Paper &rt; Rock\n" "Choose either Rock, paper or scissors to play against the machine.\n" "\nThe machine plays randomly.\n" "Round number plus one and then divided by two is the minimum of\n" "'Rock, paper, scissors' you need to perform to win the game."); } else if (user_input == 'a'){ printf("Round Number? (3, 5, 7)"); scanf(" %d", &tr); } }

void switcheroo(int a); //switcherro is a function that "switches" the cases for the object determined by its parameter, int a///

void switcheroo(int a){ switch (a){ case 1: rps[5] = "rock"; case 2: rps[6] = "paper"; case 3: rps[9] = "scissors"; } }

void game_result();

void game_result(){ printf("\n\n\n\nThe winner is - drum roll please... (press ENTER)"); getchar(); if (su == sc){ printf("\tno one! \nThe game ended in a draw.\n\nFINAL SCORES: %d : %d", su, sc); } else if (su &rt; sc){ printf("\t%s! \nHooray! The victory is yours!\n\nFINAL SCORES: %d : %d", name, su, sc); } else{ printf("\t the computer! \nBetter luck next time!\n\nFINAL SCORES: %d : %d", su, sc); } printf("\n\n\nDo you wish to go to the game's start page or exit? Input a to return to the start page and input anything else to simply exit the program.\n"); scanf(" %c", &user_input[0]); if (*user_input == "a"){ printf("No problem, redirecting you to the main page...\n\n\n"); goto start_page; } else{ exit(0); } }

void game();

void game() { char urps[10]; char crps[10] //urps = user action in string form; crps = computer action in string form// printf("\nLoading... press ENTER to start the game"); getchar(); su = 0; sc = 0; for ( rn = 1; rn <= tr; rn++){ printf("\n\n%s V.S. Computer\n" "Round %d\n" "Total Round: %d\n" "Scoreboard: %d : %d\n", name, rn, tr, su, sc); printf("\nChoose what you will play next: Rock = 1; Paper = 2; Scissors = 3"); scanf("%d", &ua); ca = (rand() % 3)+1;

    switcheroo(ua);
    urps = rps;
    switcheroo(ca);
    crps = rps;

    printf("The result is... (press ENTER)");
    getchar();
    if (ua == ca){
        printf("\n\n\nUser ( %c) vs. Computer ( %c) results in a DRAW", &urps, &crps);
    }
    else:
        switch (ua){
            case 1:
                if (ca == 2){
                    printf("\n\n\nUser ( %c) vs. Computer ( %c) -- The computer wins!", &urps, &crps);
                    sc += 1;
                }
                else{
                    printf("\n\n\nUser ( %c) vs. Computer ( %c) -- You win!", &urps, &crps);
                    su += 1;
                }

            case 2:
                if (ca == 3){
                    printf("\n\n\nUser ( %c) vs. Computer ( %c) -- The computer wins!", &urps, &crps);
                    sc += 1;
                }
                else{
                    printf("\n\n\nUser ( %c) vs. Computer ( %c) -- You win!", &urps, &crps);
                    su += 1;
                }

            case 3:
                if (ca == 1){
                    printf("\n\n\nUser ( %c) vs. Computer ( %c) -- The computer wins!", &urps, &crps);
                    sc += 1;
                }
                else{
                    printf("\n\n\nUser ( %c) vs. Computer ( %c) -- You win!", &urps, &crps);
                    su += 1;
                }

//The if statement below acts as a checkpoint to make sure the game ends immediately after the result is fixed.// if ((sc == (tr + 1)/2)||(su == (tr + 1)/2)){ game_result(); } printf("\n\nNext Term..."); printf("\nTo proceed, press ENTER"); getchar(); game_result();

        }
}

}

int main() {

srand(time(NULL));

printf("\nROCK, PAPER, SCISSORS\n");
printf("press ENTER to launch the game");
getchar();
get_name();
start_page:
    game_page();
    game();
return 0;

}

是reddit markdown mode吗？希望我没弄错。

另外每个case后要加break，不然匹配到case后会fall through