Write a program to parse and evaluate programs consisting of assignment and prin

Question

Write a program to parse and evaluate programs consisting of assignment and print statements with fully parenthesized arithmetic expressions (see Program 4.3.5). For example, given the input
A = 5
B = 10
C = A + B
D = C * C
print(D)
your program should print the value 225. Assume that all variables and values are of type double. Use a symbol table to keep track of variable names.
Experiments

Write a program to evaluate polynomials of the form:
ax^5 + bx^4 + cx^3 + dx^2 + ex + f
Discuss the limitations of this language. What kinds of programs can you write in Java that you cannot write here?

Explanation / Answer

#include <stdio.h>

#include<math.h>

int main(void)

{

int a[1000]={0};

int i=0,n,x;

printf("Enter the degree of polynomial : ");

scanf("%d",&n);

printf("Enter the co-effecients of the polynomial : ");

for(i=0;i<=n;i++)

scanf("%d",&a[i]);

printf("Enter the vale of x : ");

scanf("%d",&x);

//Initializing value of polynomial to 0

int sum = 0;

for(i=n;i>=0;i--)

{

int k = pow(x,i);

k=k*a[i];

sum=sum+k;

}

printf(" Value of polynomial = %d ",sum);

return 0;

}

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