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  1. #include<stdio.h>
  2. #include<stdlib.h>
  3. #include<ctype.h>
  4. #include<string.h>
  5. typedef struct
  6. {
  7.   int a[101];
  8.   int top;
  9. }stack;
  10. void push(stack *s,int val);
  11. void pop(stack *s);
  12. int mult;
  13. int main()
  14. {
  15.   stack s;
  16.   s.top=-1;
  17.   int i,len;
  18.   char temp[101],c;
  19.   gets(temp);
  20.   len=strlen(temp);
  21.   i=0;
  22.   while(i<len)
  23.   {
  24.     c=temp[i];
  25.     if(c!=')')
  26.     {
  27.     switch(c)
  28.     {
  29.       case 'H':
  30.                 push(&s,1);
  31.                 break;
  32.       case 'O':
  33.  
  34.                 push(&s,16);
  35.                 break;
  36.       case 'C':
  37.  
  38.                 push(&s,12);
  39.                 break;
  40.       case '(':
  41.                 push(&s,0);
  42.                 break;
  43.  
  44.       default : mult=c-'0';
  45.                 int q=s.a[s.top];
  46.                 q=q*mult;
  47.                 s.top--;
  48.                 push(&s,q);
  49.                 break;
  50.     }
  51.     }
  52.     else             //  ) pop
  53.     {
  54.       pop(&s);
  55.       if(i+1<len && isdigit(temp[i+1]))
  56.       {
  57.         int val,mult;
  58.         mult=temp[i+1]-'0';
  59.         val=s.a[s.top];
  60.         val=val*mult;
  61.         s.top--;
  62.         push(&s,val);
  63.         i++;
  64.       }
  65.  
  66.     }
  67.  
  68.     i++;
  69.   }
  70.   int sum=0;
  71.   while(s.top!=-1)
  72.   {
  73.     sum+=s.a[s.top];
  74.     s.top--;
  75.   }
  76.   printf("%d",sum);
  77.   return 0;
  78. }
  79. void push(stack *s,int val)
  80. {
  81.   s->a[++s->top]=val;
  82. }
  83. void pop(stack *s)
  84. {
  85.   int v,t=0;
  86.   while(s->a[s->top]!=0)
  87.   {
  88.     v=s->a[s->top--];
  89.     t+=v;
  90.   }
  91.   s->top--;
  92.   push(s,t);
  93. }
  94.  
Success #stdin #stdout 0s 4308KB
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https://ideone.com/SPJGEA
language:
C (gcc 8.3)
created:
5 years ago
visibility:
public

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