Warning: Initialization Makes Integer From Pointer Without A Cast

[nexusdarkblue]

Hello everyone,

I am somewhat new to C programming (I started last year) and I'm fairly good at it so far...that is, until I've recently started working with structures.

In my current program, I'm simply trying to initialize a simple array of structures that will be the test template for other similar programs I plan on using in the future. The program is as follows:

================================================== =======

#include <stdio.h>
 
int main(int argc, char *argv[])
{
 
        int time, closest;
 
        struct flight
        {
                int depart[FLIGHTS];
                int arrive[FLIGHTS];
                char *attendant;
        };
 
        struct flight schedule[] =
        {{800, 1016, "Jason Mackenzie"},
          {943, 1152, "Valerie Woods"},
          {1119, 1331, "Antonio Vasquez"},
          {1247, 1500, "Natalie McIver"},                   
          {1400, 1608, "Scott Curtis"},
          {1545, 1755, "Yvonne Vogelar"},
          {1900, 2120, "Mitch Matthews"},
          {2145, 2358, "Marcie Maddox"}};
 
        printf("%d\n", schedule[0].arrive[0]);
 
        return 0;
}
 

================================================== =======

For each line where I'm trying to initialize each index of the schedule array, the
compiler gives me a warning and I can't figure out why.

To test to see if my code was correct or not, I used a simple printf( ) statement, and all I got for the output was zero, so I'm obviously doing something wrong here. Can anyone help? I'd really appreciate it--thanks!

RICH

[donbock]

@nexusdarkblue
The 'departs' and 'arrive' structure fields are arrays. You need to properly delimit array initializers:

        struct flight schedule[] = {
            { {800}, {1016}, "Jason Mackenzie"},
            { {943}, {1152}, "Valerie Woods"},
            { {1119}, {1331}, "Antonio Vasquez"},
            { {1247}, {1500}, "Natalie McIver"},                   
            { {1400}, {1608}, "Scott Curtis"},
            { {1545}, {1755}, "Yvonne Vogelar"},
            { {1900}, {2120}, "Mitch Matthews"},
            { {2145}, {2358}, "Marcie Maddox"}
        };

Suppose you want one of these initializers to set more than the first element in the 'departs' array:

            { {943, 1159, 1530}, {1152}, "Valerie Woods"},

One last observation, the 'attendant' field should be defined as 'const char * const' unless you intend to change the 'attendant' strings on the fly.

[Savage]

@nexusdarkblue
You are trying to initialize a array with a single integer, interesting thing is that you get only a warning, this is a compile time error on all the compilers i know.

You need to add an extra pair of curly brackets around the array intialization something like this:

    struct flight schedule[] =
    {
      {{800}, {1016}, "Jason Mackenzie"},
      {{943}, {1152}, "Valerie Woods"},
      {{1119}, {1331}, "Antonio Vasquez"},
      {{1247}, {1500}, "Natalie McIver"},
      {{1400}, {1608}, "Scott Curtis"},
      {{1545}, {1755}, "Yvonne Vogelar"},
      {{1900}, {2120}, "Mitch Matthews"},
      {{2145}, {2358}, "Marcie Maddox"}
    };

EDIT:Guess I'm a bit too late,didn't see don's post coming ^^

[nexusdarkblue]

Ahhh, the curly braces! Thanks to you both donbock and Savage--my code works like a charm now! (Can't believe I forgot those curly braces--it's so simple! :-)

RICH