programing in C language?!

[mbolhi]

Hi all,

I am learning C language in S-Function Simulink

does any one prgram in C?

I need help please

Thanks

[Mark44]

Lots of people program in C, including quite a few here at Physics Forum. What difficulties are you having?

[mbolhi]

well, i am quite novice and i have some error i need to debug in C code

can you help me please?

thanks

[black_em2]

Well you are going to need to post your code, your errors, and the goal of the program or no one will be able to help you.

[mbolhi]

here is my code and thanks for your help in advance!!!

double theta, A1, A2, phi, C, A0, L ;

theta = 1;

A0 = 0.7;
L = 0.160;

C = sqrt(A0*A0 + L*L);

phi = atan(A0/L);


//************************************************** ************************




if (C*C + L*L - 2*L*C*cos(phi - theta)>0.0);
{
A1 = sqrt(C*C + L*L - 2*L*C*cos(phi - theta));
}

else if (C*C + L*L - 2*L*C*cos(phi - theta)<0.0);
{

printf("error -- sqrt_negative\n");

}

if (C*C + L*L - 2*L*C*cos(phi + theta)>0.0);
{
A2 = sqrt(C*C + L*L - 2*L*C*cos(phi + theta));
}

else if (C*C + L*L - 2*L*C*cos(phi + theta)<0.0);
{
printf("error -- sqrt_negative\n");
}



I get these errors:

syntax error; found `if' expecting `;'

unrecognized statement

[Mark44]

here is my code and thanks for your help in advance!!!

double theta, A1, A2, phi, C, A0, L ;

theta = 1;

A0 = 0.7;
L = 0.160;

C = sqrt(A0*A0 + L*L);

phi = atan(A0/L);


//************************************************** ************************




if (C*C + L*L - 2*L*C*cos(phi - theta)>0.0);<---- Remove semicolon
{
A1 = sqrt(C*C + L*L - 2*L*C*cos(phi - theta));
}

else if (C*C + L*L - 2*L*C*cos(phi - theta)<0.0);<---- Remove semicolon
{

printf("error -- sqrt_negative\n");

}

if (C*C + L*L - 2*L*C*cos(phi + theta)>0.0);<--- Remove semicolon
{
A2 = sqrt(C*C + L*L - 2*L*C*cos(phi + theta));
}

else if (C*C + L*L - 2*L*C*cos(phi + theta)<0.0);<--- Remove semicolon

{
printf("error -- sqrt_negative\n");
}



I get these errors:

syntax error; found `if' expecting `;'

unrecognized statement

You have some extra semicolons that need to be removed.