Do/While 无法识别 C 中结束循环的字符

Question

我试图在这个“arq.txt”文件中写入一些字符，它在开始时运行良好，但是当我键入零以重新启动程序时，Do / While 循环不再识别零我再也摆脱不了了。请帮我！这是我的代码：

#include <stdio.h>
#include <stdlib.h>

int main()
{
    FILE *p;
    char ch;
    int c = 1, i, cont = 0;

    while(c) {

        printf("\n-------- DIGITANDO VALORES --------\n");

        p = fopen("arq.txt", "w");
        do {
            printf("Type: ");
            scanf("%c", &ch);
            getchar();
            putc(ch, p);
            cont++;
        } while(ch != '0');
        fclose(p);

        p = fopen("arq.txt", "r");
        for(i = 0; i <= cont; i++) {
            ch = fgetc(p);
            printf("%c\n", ch);
        }
        fclose(p);

        printf("If you wish to finish program, please type zero: ");
        scanf("%d", &c);
    }

}

Answer 1

scanf("%c", &ch); 从 scanf("%d", &c); 读取剩余的换行符。

尝试 scanf("%c", &ch); getchar(); --> scanf(" %c", &ch);。注意 space

Do/While 无法识别 C 中结束循环的字符

Do/While not recognizing the character to end loop in C

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