Question

我决定在夏天看看目标C，所以我下载了Xcode，我是编程的新手，请同情

我想我会尝试创建一个将字母转换为数字的程序，我确信有更好的方法可以做到这一点，但目前我遇到了问题＆＃34;变量＆＃39; A＆＃39;在其自己的初始化中使用时未初始化＆＃34;

这是我的代码，朋友们：

#import <Foundation/Foundation.h>
#include <string.h>
#include <stdio.h>

char word[10];
char numbers[10];




int i = 0;
void Convert (char input[10]);

int main(int argc, const char * argv[]) {



    NSLog(@"Enter the word");


    gets(word);
    Convert (word);
    puts(numbers);

    return 0;
}

void Convert (char input[10]) {
    char A = A;
    char B = B;
    char C = C;
    char D = D;
    char E = E;
    char F = F;
    char G = G;
    char H = H;
    char I = I;
    char J = J;
    char K = K;
    char L = L;
    char M = M;
    char N = N;
    char O = O;
    char P = P;
    char Q = Q;
    char R = R;
    char S = S;
    char T = T;
    char U = U;
    char V = V;
    char W = W;
    char X = X;
    char Y = Y;
    char Z = Z;
    for (i=0;word[i] != '\0'; ++i)


    {
        if (word[i] == A || B || C){
            numbers[i] = 2;
        }
        else if (word[i] == D || E || F){
            numbers[i] = 3;
        }
        else if (word[i] == G || H || I){
            numbers[i] = 4;
        }
        else if (word[i] == J || K || L){
            numbers[i] = 5;
        }
        else if (word[i] == M || N || O){
            numbers[i] = 6;
        }
        else if(word[i] == P || Q || R || S){
            numbers[i] = 7;
        }
        else if(word[i] == T || U || V){
            numbers[i] = 8;
        }
        else if(word[i] == W || X || Y || Z){
            numbers[i] = 9;
        }
        else {
            numbers[i] = 0;
        }
    }


}

我确信这本书可以写得更好，所以欢迎任何其他批评或建议，指导我指导学习c的正确方向也欢迎！

Answer 1

初始化char类型变量时，该值必须位于一对撇号

中

e.g。 char A ='A';

Answer 2

如果您要检查实际字符，那么您需要用撇号包围字母（否则您实际上是将A分配给变量A而不是字符＆＃39; A＆＃39;正如您可能想要的那样：

char A = 'A';
char B = 'B';
char C = 'C';
char D = 'D';
char E = 'E';
char F = 'F';
char G = 'G';
char H = 'H';
char I = 'I';
char J = 'J';
char K = 'K';
char L = 'L';
char M = 'M';
char N = 'N';
char O = 'O';
char P = 'P';
char Q = 'Q';
char R = 'R';
char S = 'S';
char T = 'T';
char U = 'U';
char V = 'V';
char W = 'W';
char X = 'X';
char Y = 'Y';
char Z = 'Z';

变量“A”在其自己的初始化中使用时未初始化

2 个答案: