代码无法调试三个C4996错误

#include<stdio.h>
void main(){
    int mi, s, ch, g, f, t;
    int fun1(int y);
    int fun2(int n);
    printf("输入密码");
    scanf("%d", &mi);
    if (mi != 888) {
        printf("您无权使用");
    }
    else {
        printf("***********");
        printf("1.字符加密");
        printf("2.打印图形");
        printf("***********");
        scanf("%d", &s);
        switch (s) {
        case 1: {
            printf("请输入要加密的字符");
            ch = getchar();
            while (g != '\n') {
                f = fun1(ch);
                printf("%d", f);
                ch = getchar();
                if (ch = '\n')
                {
                    break;

                }
            }

        }; break;
        case 2: {
            printf("请输入行数");
            scanf("%d", &t);
            fun2(t);

        }; break;
        }


    }
}


int fun1(int y) {
    
    y = y + 4;
    return(y);

}
int fun2(int n) {
    int c, i, j;
    for ( i = 0; i < n; i++)
    {
        for (c = 1; c < n; c++) {
            printf(" ");
            for (j = 0; j < 5; j++) {
                printf("*");
            }
        }

    }
    return 0;

}

```

在项目属性管理,c++所有选项设置里面有个 禁用特定警告直接输入4996就可以了!

#include<stdio.h>
void main() {
    int mi, s, ch, g, f, t;
    int fun1(int y);
    int fun2(int n);
    printf("输入密码:");
    scanf("%d", &mi);
    if (mi != 888) {
        printf("您无权使用");
    } else {
        printf("***********\n");
        printf("1.字符加密\n");
        printf("2.打印图形\n");
        printf("***********\n");
        scanf("%d", &s);
        getchar();
        switch (s) {
            case 1:
                printf("请输入要加密的字符:");
                while ((ch = getchar())!= '\n') {
                    f = fun1(ch);
                    printf("%d ", f);
                }
                break;
            case 2:
                printf("请输入行数");
                scanf("%d", &t);
                fun2(t);
                break;
        }
    }
}

int fun1(int y) {
    y = y + 4;
    return(y);
}
int fun2(int n) {
    int c, i, j;
    for ( i = 0; i < n; i++) {
        for (c = 1; c < n; c++) {
            printf(" ");
            for (j = 0; j < 5; j++) {
                printf("*");
            }
        }
    }
    return 0;
}