Solution:
#include<stdio.h>
#include<stdlib.h>
#include<string.h>
int top = -1;
char stack[100];
// to push elements in stack
void push(char a)
{
stack[top] = a;
top++;
}
// to pop elements from stack
void pop()
{
if (top == -1)
{
printf("expression is invalid\n");
exit(0);
}
else
{
top--;
}
}
int main()
{
int i,cho;
char a[100];
printf("\nEnter expression : ");
scanf("%s",a);
for (i = 0; a[i] != '\0';i++)
{
if (a[i] == '(')
{
push(a[i]);
}
else if (a[i] == ')')
{
pop();
}
}
if (top == -1)
{
printf("Expression is Parenthesized\n\n");
}
else
{
printf("Expression is not Parenthesized\n\n");
}
return 0;
}
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