Thread: help with the basic's

Howdy,

I am just learning the c languge from Sam's Teach yourself C.
I am on to Understanding Arrays, there is a question I had that was not answered in the book.

The question was write a program to display the total memory space taken by the array(I understand this part), what I was wondering if you had a array of floating numbers to print the array out would I use a for loop or a while loop, because I cant figure out how to get it to work with a for loop, If i change i to a double or float it still wont work here is my code, And thank you all for your time and your suggestions.

Code:

#include <stdio.h>

main() {
    
    double list_data[6] = {
            1.12345,
            2.12345,
            3.12345,
            4.12345,
            5.12345,
            6.12345};
            
    int i, size;
    size = sizeof(list_data);
    printf("The size of list_data is %d\n", size); 
        for (i=0; i<list_data[i]; i++) 
           printf(" %.5f\n", list_data[i]);
               
        
            
    return (0);
}

So the normal structure for a for loop is:

Code:

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

in your case array size is 6.

Similarly to get the ith element in the array for printing, you use list_data[i]

If you know how to use while loop than is simple to use a for loop instead of the while loop. The similarities between this 2 loop are this:
*while loop:

Code:

int contor = 0;

while(cnd) {
/* do smthg */
contor++;
}

*for loop:

Code:

int contor;

for (contor = 0; cnd; contor++) {
/* do smthg */
}

The 2 of them are equivalent.