`deriv`

function.It is not difficult, knowing that, for the derivative polynomial

a[k] = a[k+1]*(k+1)where

k = 0,1,..(deg-1)

#include <stdio.h> #include <conio.h> #include <math.h> float poly(float a[], int, float); float deriv(float a[], int, float); int main() { float x, a[10], y1, dy1; int deg, i, j; printf("Enter the degree of polynomial equation: "); scanf("%d", °); printf("Ehter the value of x for which the equation is to be evaluated: "); scanf("%f", &x); for(i = 0; i <= deg; i++) { printf("Enter the coefficient of x to the power %d: ", i); scanf("%f", &a[i]); } y1 = poly(a, deg, x); dy1 = deriv(a, deg, x); printf("The value of polynomial equation for the value of x = %.2f is: %.2f", x, y1); printf("\nThe value of the derivative of the polynomial equation at x = %.2f is: %.2f", x, dy1); return 0; } /* function for finding the value of polynomial at some value of x */ float poly(float a[], int deg, float x) { float p; int i; p = a[deg]; for (i = deg; i >= 1; i--) { p = (a[i - 1] + x * p); } return p; } //take co-eff values through scanf command use for loop for (i=deg;i>0;i--) { scanf("%d",&a[i]); b[i]=i; } for (j=deg;j>=0;j--) { if b[j]>0 c[j]=a[j]*b[j]; b[j]=b[j]-1; } printf("%dx^%d",&c[j],&b[j]); } else } deg=deg-1; //Second derivative for(k=deg;k>0;k--) { if b[k]>0; { c[k]=c[k]*b[k]; b[k]=b[k]-1; printf("%dx^%d",&c[k],&b[k]); } else deg=deg-1; } //Third derivative for (l=deg;l>0;l--) { if b[l]>0; { c[l]=c[l]*b[l]; b[l]=b[l]-1; printf("%dx^%d",&c[l],&b[l]); } else } return 0;

You didn't write the

It is not difficult, knowing that, for the derivative polynomial

`deriv`

function.It is not difficult, knowing that, for the derivative polynomial

a[k] = a[k+1]*(k+1)where

k = 0,1,..(deg-1)

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All functions need a header, an open curly bracket, and a close curly bracket:

Your code is missing those and you cannot just put code in the file randomly - C only allows code inside functions!

You should expect to get syntax errors every day, probably many times a day while you are coding - we all do regardless of how much experience we have! Sometimes, we misspell a variable, or a keyword; sometimes we forget to close a string or a code block. Sometimes the cat walks over your keyboard and types something really weird. Sometimes we just forget how many parameters a method call needs.

We all make mistakes.

And because we all do it, we all have to fix syntax errors - and it's a lot quicker to learn how and fix them yourself than to wait for someone else to fix them for you! So invest a little time in learning how to read error messages, and how to interpret your code as written in the light of what the compiler is telling you is wrong - it really is trying to be helpful!

So read this: How to Write Code to Solve a Problem, A Beginner's Guide Part 2: Syntax Errors[^] - it should help you next time you get a compilation error!

C

ReturnType FunctionName(ParameterList) { ... body of function here ... }

Your code is missing those and you cannot just put code in the file randomly - C only allows code inside functions!

You should expect to get syntax errors every day, probably many times a day while you are coding - we all do regardless of how much experience we have! Sometimes, we misspell a variable, or a keyword; sometimes we forget to close a string or a code block. Sometimes the cat walks over your keyboard and types something really weird. Sometimes we just forget how many parameters a method call needs.

We all make mistakes.

And because we all do it, we all have to fix syntax errors - and it's a lot quicker to learn how and fix them yourself than to wait for someone else to fix them for you! So invest a little time in learning how to read error messages, and how to interpret your code as written in the light of what the compiler is telling you is wrong - it really is trying to be helpful!

So read this: How to Write Code to Solve a Problem, A Beginner's Guide Part 2: Syntax Errors[^] - it should help you next time you get a compilation error!

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