C语言通过栈实现将十进制转为八进制输出

悠悠 2022-06-18 05:25 176阅读 0赞

# include<stdio.h>
    #include<malloc.h> 
    
    # define stackincrement 10
    # define stack_size 100
    typedef int ElemType;
    typedef int status;
    typedef int SelemType;
    
    # define OK 1
    # define OVERFLOW -1
    # define ERROR -1
    
    typedef struct 
    {
        int *base;
        int *top;
        int stacksize;
    } SqStack;
    
    status InitStack(SqStack *S){
        S->base = (SelemType *)malloc(stack_size * sizeof(ElemType));
        if (!S->base)
        {
            exit(OVERFLOW);     
        }
        S->top = S->base;
        S->stacksize = stack_size;
        return OK;
    }
    
    status GetTop(SqStack *S,SelemType e){
        if(S->top == S->base) return ERROR;
        e = (*S->top - 1);
        return OK;
    }
    
    status Push(SqStack *S,SelemType e){
        if ((S->top - S->base ) >= S->stacksize)
        {
            S->base = (ElemType*)realloc(S->base,(S->stacksize + stackincrement) * sizeof(ElemType));
            if (!S->base) exit(OVERFLOW);
    
                S->top = S->base + S->stacksize;
                S->stacksize += stackincrement;                 
        }
        *S->top++ = e;
    
        return OK;
    }
    
    status StackEmpty(SqStack *S){
        if (S->base == S->top)
        {
            return 1;
        }else{
            return 0;
        }
    }
    
    status Pop(SqStack *S,SelemType *e){
        if (S->top == S->base)
        {
            return ERROR;
        }
        S->top = S->top - 1;
        *e = *S->top;
        return OK;
    }
    
    void conversion(SqStack *S,int num){
        int a;
        while(num){
            a = num % 2;
            Push(S,a);
            num /= 2;
        }
    
        printf("转换的八进制数：");
        while(!StackEmpty(S)){      
            SelemType e;
            Pop(S,&e);
            printf("%d", e);
        }
    }
    
    main (){
        SqStack stack;
        InitStack(&stack);
        int num;
        printf("请输入一个十进制数：");
        scanf("%d",&num);
        conversion(&stack,num);
    }

实现结果：  
![这里写图片描述][SouthEast]

[SouthEast]: /images/20220618/c89f56523e55462bade3a942ec6a81a4.png