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Thank you! I know !while(feof) is considered a bad practice, so your solution is way more elegant. But I still have the same problem, if I search for a specific job using linear search in a text file...

I have a text file of the form:
number string

I want to be able to search for a code using binary search, look up a specific name using linear search and print all names that start with a...

Thank you for the reply, however if I do this:


for (int a = 0; a < 3; ++a)
for (int b = a + 1; b < 4; ++b)
for (int c = b + 1; c < 5; ++c)
printf("%d%d%d\n", 2*a, 2*b, 2*c);

...

I need to generate all 10-digit telephone numbers which start with 0721 and have 3 distinct even digits (not counting the first 4). I know I should be using backtracking and I think I got the math...

UPDATE: I've updated the code again, I'm getting output that adds to the target sum. Still have 2 problems: it uses a value more times than it appears in the original and it doesn't print all unique...

Could you please explain this a bit more? Why is it garbage data, shouldn't I be processing the data from the array of coins to check each value? I made some progress with the code, but getting an...

I'm getting a segmentation fault now, this is what my debugger says:
Program received signal SIGSEGV, Segmentation fault.
0x0000555555555178 in back (step=<error reading variable: Cannot access...

I'm trying to implement a version of subset sum using backtracking. From an array of coins, I want to obtain a certain sum. this is my code so far but I'm getting no output:


#include <stdio.h>...

I have the following task:
Implement a program that reads lines of data from a file specified as a command-line argument, having the following format:


{ana12 : mere}
{andrew : -}
{john : ...

Desired output would be:
6.12 2.13 9.33 1.2 // 7 digits in total in the decimal part
3.14 5.221 0.55 4.77 // 9 digits in total in the decimal part
0.99 4.22 3.56 8.95 3.125 // 11 digits in total...

I have a .txt file with floating point values on each line:
3.14 5.221 0.55 4.77
6.12 2.13 9.33 1.2
0.99 4.22 3.56 8.95 3.125
9.0575 4.897542 120.2324 55.555


#include <stdio.h>...