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I have read the following and am still unable to answer my question:

How to Fix “control may reach end of non-void function” and “No such file or directory” Errors?

Error: control may reach end of non-void function [duplicate]

pset 3 “control may reach the end of a non-void function” [duplicate]

I am still getting the error "Control may reach end of non-void function".

I don't understand why I am getting this error despite having a "return false;" statement after the "if" function. Any help would be most appreciated.

Thank you

/**
 * helpers.c
 *
 * Computer Science 50
 * Problem Set 3
 *
 * Helper functions for Problem Set 3.
 */

#include <cs50.h>

#include "helpers.h"

/**
 * Returns true if value is in array of n values, else false.
 */
bool search(int value, int values[], int n)
{
    // TODO: implement a searching algorithm
    if (n > 0)
    {
        for (int i = 0; i < n; i++)
        {
            if (values[i] == value)
            {
                return true;
            }

            return false;
        }   
    }
    else
    {
        return false;
    }


/**
 * Sorts array of n values.

void sort(int values[], int n)
{
    // TODO: implement an O(n^2) sorting algorithm
    return;
} */ }

Thank you for reading my question, though I disagree that this is a duplicate. I have read the other threads and I am unable to find a solution to this issue. I have tried putting a "return false;" before the last "}" and I get this instead:

jharvard@appliance (~/Dropbox/pset3/find): make helpers
clang -ggdb3 -O0 -std=c99 -Wall -Werror    helpers.c  -lcs50 -lm -o helpers
/usr/bin/ld: /usr/lib/debug/usr/lib/i386-linux-gnu/crt1.o(.debug_info): relocation 0 has invalid symbol index 11
/usr/bin/ld: /usr/lib/debug/usr/lib/i386-linux-gnu/crt1.o(.debug_info): relocation 1 has invalid symbol index 12
/usr/bin/ld: /usr/lib/debug/usr/lib/i386-linux-gnu/crt1.o(.debug_info): relocation 2 has invalid symbol index 2
/usr/bin/ld: /usr/lib/debug/usr/lib/i386-linux-gnu/crt1.o(.debug_info): relocation 3 has invalid symbol index 2
/usr/bin/ld: /usr/lib/debug/usr/lib/i386-linux-gnu/crt1.o(.debug_info): relocation 4 has invalid symbol index 11
/usr/bin/ld: /usr/lib/debug/usr/lib/i386-linux-gnu/crt1.o(.debug_info): relocation 5 has invalid symbol index 13
/usr/bin/ld: /usr/lib/debug/usr/lib/i386-linux-gnu/crt1.o(.debug_info): relocation 6 has invalid symbol index 13
/usr/bin/ld: /usr/lib/debug/usr/lib/i386-linux-gnu/crt1.o(.debug_info): relocation 7 has invalid symbol index 13
/usr/bin/ld: /usr/lib/debug/usr/lib/i386-linux-gnu/crt1.o(.debug_info): relocation 8 has invalid symbol index 12
/usr/bin/ld: /usr/lib/debug/usr/lib/i386-linux-gnu/crt1.o(.debug_info): relocation 9 has invalid symbol index 13
/usr/bin/ld: /usr/lib/debug/usr/lib/i386-linux-gnu/crt1.o(.debug_info): relocation 10 has invalid symbol index 13
/usr/bin/ld: /usr/lib/debug/usr/lib/i386-linux-gnu/crt1.o(.debug_info): relocation 11 has invalid symbol index 13
/usr/bin/ld: /usr/lib/debug/usr/lib/i386-linux-gnu/crt1.o(.debug_info): relocation 12 has invalid symbol index 13
/usr/bin/ld: /usr/lib/debug/usr/lib/i386-linux-gnu/crt1.o(.debug_info): relocation 13 has invalid symbol index 13
/usr/bin/ld: /usr/lib/debug/usr/lib/i386-linux-gnu/crt1.o(.debug_info): relocation 14 has invalid symbol index 13
/usr/bin/ld: /usr/lib/debug/usr/lib/i386-linux-gnu/crt1.o(.debug_info): relocation 15 has invalid symbol index 13
/usr/bin/ld: /usr/lib/debug/usr/lib/i386-linux-gnu/crt1.o(.debug_info): relocation 16 has invalid symbol index 13
/usr/bin/ld: /usr/lib/debug/usr/lib/i386-linux-gnu/crt1.o(.debug_info): relocation 17 has invalid symbol index 13
/usr/bin/ld: /usr/lib/debug/usr/lib/i386-linux-gnu/crt1.o(.debug_info): relocation 18 has invalid symbol index 13
/usr/bin/ld: /usr/lib/debug/usr/lib/i386-linux-gnu/crt1.o(.debug_info): relocation 19 has invalid symbol index 13
/usr/bin/ld: /usr/lib/debug/usr/lib/i386-linux-gnu/crt1.o(.debug_info): relocation 20 has invalid symbol index 13
/usr/bin/ld: /usr/lib/debug/usr/lib/i386-linux-gnu/crt1.o(.debug_info): relocation 21 has invalid symbol index 22
/usr/bin/ld: /usr/lib/debug/usr/lib/i386-linux-gnu/crt1.o(.debug_line): relocation 0 has invalid symbol index 2
/usr/bin/../lib/gcc/i686-linux-gnu/4.8/../../../i386-linux-gnu/crt1.o: In function `_start':
(.text+0x18): undefined reference to `main'
clang: error: linker command failed with exit code 1 (use -v to see invocation)
make: *** [helpers] Error 1
jharvard@appliance (~/Dropbox/pset3/find):
Improve this question
6
  • the compiler isn't smart enough to assume that i will always be < n initially. it still thinks i could be >= n initially in which case there would be no explicitly returned value.
    – kzidane ♦
    Jul 13, 2015 at 0:10
  • But with the conditions of "if n > 0" and initializing "i = 0", how would that be possible?
    – Roxanne
    Jul 13, 2015 at 0:16
  • it's not. it's just that probably the compiler isn't smart enough to know it.
    – kzidane ♦
    Jul 13, 2015 at 0:39
  • 1
    and you don't make helpers. you make find.
    – kzidane ♦
    Jul 13, 2015 at 0:40
  • After the 'else' statement, just write return false because the compiler need to know (irrespective of what is in if-else) what your function returns.
    – Muhammad Fahad Zafar
    Jul 13, 2015 at 14:58

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