c语言计算器程序的问题

问题遇到的现象和发生背景

C语言计算器

代码

#include
#include

typedef struct{
    int data[100];
    int top;
}StackData;

typedef struct{
    char symbol[100];
    int top;
}StackSymbol;

void InitData(StackData* pStackData);      
void InitSymbol(StackSymbol* pStackSymbol);     
void PushData(StackData* pStackData,int num);      
void PushSymbol(StackSymbol* pStackSymbol,char fuhao);
int GetData(StackData* pStackData);
char GetSymbol(StackSymbol* pStackSymbol);
int PopData(StackData* pStackData);
char PopSymbol(StackSymbol* pStackSymbol);
int Judge(char x);
int Culculate(int x1,int x2,char s);

void InitData(StackData* pStackData){
    pStackData->top=-1;
}

void InitSymbol(StackSymbol* pStackSymbol){
    pStackSymbol->top=-1;
}

void PushData(StackData* pStackData,int num){
    pStackData->top++;
    pStackData->data[pStackData->top]=num; 
}

void PushSymbol(StackSymbol* pStackSymbol,char fuhao){
    pStackSymbol->top++;
    pStackSymbol->symbol[pStackSymbol->top]=fuhao;
}

int GetData(StackData* pStackData){
    return pStackData->data[pStackData->top];
}

char GetSymbol(StackSymbol* pStackSymbol){
    return pStackSymbol->symbol[pStackSymbol->top];
}

int PopData(StackData* pStackData){
    int i;
    i=pStackData->data[pStackData->top];
    pStackData->top--;
    return i; 
}

char PopSymbol(StackSymbol* pStackSymbol){
    char a;
    a=pStackSymbol->symbol[pStackSymbol->top];
    pStackSymbol->top--;
    return a;
}

int Judge(char x){
    if(x=='('){
        return 1;
    }
    else if(x=='+'||x=='-'){
        return 2;
    }
    else if(x=='*'||x=='/'){
        return 3;
    }
    else if(x==')'){
        return 4;
    } 
}

int Culculate(int x1,int x2,char s){
    int result;
    switch(s){
        case '+':{
            result=x1+x2;
            break;
        }
        case '-':{
            result=x1-x2;
            break;
        }
        case '*':{
            result=x1*x2;
            break;
        }
        case '/':{
            result=x1/x2;
            break;
        }
    }
    return result;
}

int main(){
    StackData *data;
    StackSymbol *symbol;
    InitData(data);
    InitSymbol(symbol);
    int a=0,b=0,result=0,x1,x2;
    char y;
    char s[100]={0};
    char *str=(char *)malloc(sizeof(char)*200);
    while((y=getchar())!='\n'){
        str[a]=y;
        a++;
    }
    str[a]='\0';
    for(a=0;str[a]!='\0';a++){
        if(a==0&&str[a]=='-'){
            s[b++]=str[a];
        }
        else if(str[a]=='('&&str[a+1]=='-'){
            a++;
            s[b++]=str[a++];
            while(str[a]>='0'&&str[a]<='9'){
                s[b]=str[a];
                b++;
                a++;
            }
            PushData(data,atoi(s));
            while(b>0){
                s[b]=0;
                b--;
            }
            if(str[a]!=')'){
                a--;
                PushSymbol(symbol,'(');
            }
        }
        else if(str[a]>='0'&&str[a]<='9'){
            while(str[a]>='0'&&str[a]<='9'){
            s[b]=str[a];
            b++;
            a++;    
            }
            PushData(data,atoi(s));
            while(b>0){
                s[b]=0; 
                b--;
            }
            a--;
        }
        else{
            if(symbol->top==-1){
                PushSymbol(symbol,str[a]);
            }
            else if(Judge(str[a])==1){
                PushSymbol(symbol,str[a]);
            }
            else if(Judge(str[a])==2){
                if(Judge(GetSymbol(symbol))==1){
                    PushSymbol(symbol,str[a]);
                }
                else if(Judge(GetSymbol(symbol))==2){
                    while(symbol->top>=0&&data->top>=1){
                        x2=PopData(data);
                        x1=PopData(data);
                        result=Culculate(x1,x2,PopSymbol(symbol));
                        PushData(data,result);
                    }
                    PushSymbol(symbol,str[a]);
                }
                else if(Judge(GetSymbol(symbol))==3){
                    while(symbol->top>=0&&data->top>=1){
                        x2=PopData(data);
                        x1=PopData(data);
                        result=Culculate(x1,x2,PopSymbol(symbol));
                        PushData(data,result);
                    }
                    PushSymbol(symbol,str[a]);
                }
            }
            else if(Judge(str[a])==3){
                if(Judge(GetSymbol(symbol))==1){
                    PushSymbol(symbol,str[a]);
                }
                else if(Judge(GetSymbol(symbol))==2){
                    PushSymbol(symbol,str[a]);
                }
                else if(Judge(GetSymbol(symbol))==3){
                    while(symbol->top>=0&&data->top>=1){
                        x2=PopData(data);
                        x1=PopData(data);
                        result=Culculate(x1,x2,PopSymbol(symbol));
                        PushData(data,result);
                    }
                    PushSymbol(symbol,str[a]);
                }
            }
            else if(Judge(str[a])==4){
                do{
                    x2=PopData(data);
                    x1=PopData(data);
                    result=Culculate(x1,x2,PopSymbol(symbol));
                    PushData(data,result);
                }while(Judge(GetSymbol(symbol))!=1);
                PopSymbol(symbol);
            }
        }
    }
    free(str);
    while(symbol->top!=-1){
        x2=PopData(data);
        x1=PopData(data);
        result=Culculate(x1,x2,PopSymbol(symbol));
        PushData(data,result);
    }
    printf("%d",data->data[0]);
    return 0;
    
}

运行结果及报错内容

运行后直接结束，如何正常运行，并实现乘方和调试功能

main函数中的data和symbol都没初始化，改成下面的

StackData data;
StackSymbol symbol;
InitData(&data);
InitSymbol(&symbol);

PushData()等函数传参的时候，data都改成 &data , symbol都改成&symbol

InitData(data); 这时候data只是个空指针，你就在初始化函数对它成员变量赋值

#include<stdio.h>
#include<stdlib.h>
 
typedef struct{
    int data[100];
    int top;
}StackData;
 
typedef struct{
    char symbol[100];
    int top;
}StackSymbol;
 
void InitData(StackData* pStackData);      
void InitSymbol(StackSymbol* pStackSymbol);     
void PushData(StackData* pStackData,int num);      
void PushSymbol(StackSymbol* pStackSymbol,char fuhao);
int GetData(StackData* pStackData);
char GetSymbol(StackSymbol* pStackSymbol);
int PopData(StackData* pStackData);
char PopSymbol(StackSymbol* pStackSymbol);
int Judge(char x);
int Culculate(int x1,int x2,char s);
 
void InitData(StackData* pStackData){
    pStackData->top=-1;
}
 
void InitSymbol(StackSymbol* pStackSymbol){
    pStackSymbol->top=-1;
}
 
void PushData(StackData* pStackData,int num){
    pStackData->top++;
    pStackData->data[pStackData->top]=num; 
}
 
void PushSymbol(StackSymbol* pStackSymbol,char fuhao){
    pStackSymbol->top++;
    pStackSymbol->symbol[pStackSymbol->top]=fuhao;
}
 
int GetData(StackData* pStackData){
    return pStackData->data[pStackData->top];
}
 
char GetSymbol(StackSymbol* pStackSymbol){
    return pStackSymbol->symbol[pStackSymbol->top];
}
 
int PopData(StackData* pStackData){
    int i;
    i=pStackData->data[pStackData->top];
    pStackData->top--;
    return i; 
}
 
char PopSymbol(StackSymbol* pStackSymbol){
    char a;
    a=pStackSymbol->symbol[pStackSymbol->top];
    pStackSymbol->top--;
    return a;
}
 
int Judge(char x){
    if(x=='('){
        return 1;
    }
    else if(x=='+'||x=='-'){
        return 2;
    }
    else if(x=='*'||x=='/'){
        return 3;
    }
    else if(x==')'){
        return 4;
    } 
}
 
int Culculate(int x1,int x2,char s){
    int result;
    switch(s){
        case '+':{
            result=x1+x2;
            break;
        }
        case '-':{
            result=x1-x2;
            break;
        }
        case '*':{
            result=x1*x2;
            break;
        }
        case '/':{
            result=x1/x2;
            break;
        }
    }
    return result;
}
 
int main(){
    StackData *data;
    StackData sd;
    data = &sd;
    StackSymbol *symbol;
    StackSymbol ss;
    symbol = &ss;
    InitData(data);
    InitSymbol(symbol);
    int a=0,b=0,result=0,x1,x2;
    char y;
    char s[100]={0};
    char *str=(char *)malloc(sizeof(char)*200);
    while((y=getchar())!='\n'){
        str[a]=y;
        a++;
    }
    str[a]='\0';
    for(a=0;str[a]!='\0';a++){
        if(a==0&&str[a]=='-'){
            s[b++]=str[a];
        }
        else if(str[a]=='('&&str[a+1]=='-'){
            a++;
            s[b++]=str[a++];
            while(str[a]>='0'&&str[a]<='9'){
                s[b]=str[a];
                b++;
                a++;
            }
            PushData(data,atoi(s));
            while(b>0){
                s[b]=0;
                b--;
            }
            if(str[a]!=')'){
                a--;
                PushSymbol(symbol,'(');
            }
        }
        else if(str[a]>='0'&&str[a]<='9'){
            while(str[a]>='0'&&str[a]<='9'){
            s[b]=str[a];
            b++;
            a++;    
            }
            PushData(data,atoi(s));
            while(b>0){
                s[b]=0; 
                b--;
            }
            a--;
        }
        else{
            if(symbol->top==-1){
                PushSymbol(symbol,str[a]);
            }
            else if(Judge(str[a])==1){
                PushSymbol(symbol,str[a]);
            }
            else if(Judge(str[a])==2){
                if(Judge(GetSymbol(symbol))==1){
                    PushSymbol(symbol,str[a]);
                }
                else if(Judge(GetSymbol(symbol))==2){
                    while(symbol->top>=0&&data->top>=1){
                        x2=PopData(data);
                        x1=PopData(data);
                        result=Culculate(x1,x2,PopSymbol(symbol));
                        PushData(data,result);
                    }
                    PushSymbol(symbol,str[a]);
                }
                else if(Judge(GetSymbol(symbol))==3){
                    while(symbol->top>=0&&data->top>=1){
                        x2=PopData(data);
                        x1=PopData(data);
                        result=Culculate(x1,x2,PopSymbol(symbol));
                        PushData(data,result);
                    }
                    PushSymbol(symbol,str[a]);
                }
            }
            else if(Judge(str[a])==3){
                if(Judge(GetSymbol(symbol))==1){
                    PushSymbol(symbol,str[a]);
                }
                else if(Judge(GetSymbol(symbol))==2){
                    PushSymbol(symbol,str[a]);
                }
                else if(Judge(GetSymbol(symbol))==3){
                    while(symbol->top>=0&&data->top>=1){
                        x2=PopData(data);
                        x1=PopData(data);
                        result=Culculate(x1,x2,PopSymbol(symbol));
                        PushData(data,result);
                    }
                    PushSymbol(symbol,str[a]);
                }
            }
            else if(Judge(str[a])==4){
                do{
                    x2=PopData(data);
                    x1=PopData(data);
                    result=Culculate(x1,x2,PopSymbol(symbol));
                    PushData(data,result);
                }while(Judge(GetSymbol(symbol))!=1);
                PopSymbol(symbol);
            }
        }
    }
    free(str);
    while(symbol->top!=-1){
        x2=PopData(data);
        x1=PopData(data);
        result=Culculate(x1,x2,PopSymbol(symbol));
        PushData(data,result);
    }
    printf("%d",data->data[0]);
    return 0;
    
}

• 你可以看下这个问题的回答https://ask.csdn.net/questions/7683835

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