Question

How can i modify my c code so that each number stored in the array is not the array index but the value of the array index converted to radians. I have already made a function for this converion above main().

Below is the code:

#include <stdio.h>
#include <stdlib.h>
#include <math.h>

float Deg2Rad (float degrees)
{
// Calculate & return value
float Result;
Result = ((M_PI*degrees)/180.0);
return (Result);
}

int main(void)
{
// Declare variables
int Array[90];
int i;

// Loop from 0 to 90 inclusive
for ( i = 0 ; i < 91 ; i++ )
{
Array[i] = i;
printf ("Array number %d contains value %d\n", i, Array[i]);
}

// Exit the application
return 0;
}

Answer 1

Errors in your code

• You were not calling the function Deg2Rad() passing the index position in the for loop. You were simply storing the value i in the Array. You need to call the function Deg2Rad(i) with the value i passed in the function as argument to get the respective Radians and then need to store the Radian value within the array.
• Since the Deg2Rad() function returns a float value hence the Array used to store the Radian values must also be declared as float.

The corrected C Program is given below.

#include <stdio.h>
#include <stdlib.h>
#include <math.h>

float Deg2Rad (float degrees)
{
     // Calculate & return value in radians
         float Result;
         Result = ((M_PI*degrees)/180.0);
         return (Result);
}

int main(void)
{
        // Declare variables
        float Array[90];
        int i;

        // Loop from 0 to 90 inclusive
        for ( i = 0 ; i < 91 ; i++ )
        {
       // call the function Deg2Rad() passing the array index i
           // and save the returned value to the array
           Array[i] = Deg2Rad(i);
           printf ("Array number %d contains value %f\n", i, Array[i]);
    }

        // Exit the application
        return 0;
}

Console Output