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An alternative approach + a correction (#23845)

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Koustav Chowdhury
2018-11-26 07:26:34 +05:30
committed by Randell Dawson
parent aeb8ca4d3a
commit ac3e66b0a4
1 changed files with 5 additions and 3 deletions
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8
guide/english/cplusplus/stack/index.md
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@ -135,7 +135,10 @@ int main ()
#### Empty #### Empty
Returns whether the `stack` is empty ,i.e. whether your stack size is zero. Returns whether the `stack` is empty ,i.e. whether your stack size is zero.
It returns `true` if stack's size 0 else returns `false` It returns `true` if the size of the stack is 0 else returns `false`. An alternative to using this is
```cpp
if (stackname.size()==0)
```
```cpp ```cpp
//Empty operation in Stack //Empty operation in Stack
@ -167,8 +170,7 @@ int main ()
## Uses of Stack ## Uses of Stack
1. Expression Evaluation and Conversion. 1. Expression Evaluation and Conversion.
stacks are used to evaluate and convert expressions like prefx, postfix and infix expression. Stacks are used to evaluate and convert expressions like prefix, postfix and infix expression.
2. In Recursive functions to keep information about the active functions or subroutines. 2. In Recursive functions to keep information about the active functions or subroutines.
3. In Backtracking, as in DFS algorithm. 3. In Backtracking, as in DFS algorithm.
4. Memory management, run-time environment for nested language features. etc 4. Memory management, run-time environment for nested language features. etc