帮别人做作业，用c语言实现一个字符stack-创新互联

程序要实现的效果如下图

实现代码：

#include 
#include

void reverse(char ar[], int n)
{
char c;
int i = 0;
for ( i = 0; i <= n ; i++){
        c= ar[i];
        ar[i]= ar[n];
        ar[n]= c;
        n--;}

}


int main(void){

int sizeOfStack,i,iUserChoice;
char *str;
char cPush,cPop;

    printf("Enter the amount of character to be input :");

    scanf("%d", &sizeOfStack);

    str= (char*)realloc(NULL, sizeof(char)*sizeOfStack);
    
for(i =0;i0;i--)
                    str[i]=str[i-1];
                str[0]=cPush;
                str[sizeOfStack+1]='';

                sizeOfStack=sizeOfStack+1;


//printf("the final array is :%s
", str);  break;

case 2:    
                printf("pop element is :");
                scanf(" %c", &cPop);
for(i=0;i=0;i--)
                {
                    printf("%c",str[i]);
                }
                printf("
");
break;

case 7:    
                exit(0);

        }

    }
return 0;
}

要点 ：

用  realloc 函数重新分配数组大小

读取单个字符时， 注意前面加空格  scanf(" %d", &iUserChoice);

编译方法 ：  Linux : gcc -o Source Source.c

windows :  cl Source.c