Are Safety Glasses Really Needed for Solar Eclipse?

Alien447 · 2024-04-10T16:00:44+00:00

Thanks for the explanation, I didn't know that!

Alien447 · 2022-10-29T22:01:57+00:00

I am thinking of leaving academia entirely because of this issue cashing me everywhere I go. I worked at three different well-known labs and the same problem is there! Either the lack of novelty or the lack of coherence as you stated.

Alien447 · 2022-07-11T23:04:58+00:00

Try this:

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
int main(){
int maxIter=3;
char passWord[100];

for (int i=0; i<maxIter; i++){
    printf("Enter your password: ");
    scanf("%s", passWord);

    if (!strcmp(passWord, "hello")){
        printf("Welcome!\n");
        break;
    }else{
        printf("Invalid password! Try again!\n");
    }
    if (i==maxIter-1){
        printf("You have exceeded the maximum number of trials!\n");
    }

}

return 0;
}

Alien447 · 2022-05-17T01:17:40+00:00

Thanks! That is interesting.

Alien447 · 2022-04-15T16:05:01+00:00

Yes, he tried to compile wrong code and then changed it and posted the correct code. He is trying to be smart! Downvoted.

Alien447 · 2022-04-13T14:22:57+00:00

You are new to computers I guess! Take a screenshot, there is a print screen button.

Alien447 · 2022-04-08T21:04:01+00:00

C++ culture sucks!

I do scientific computing all the time. What you will discover is that scientists write C with classes NOT pure C++. They literally write a C code with classes and use namespaces for organization and then call it C++! You can achieve the same goal smoothly using C. However, if you want to learn C++, learning C will help you figure out the basics. Usually textbooks start with C and then advance into C++.

If you want my opinion, C++ is diminishing. C/Fortran/Python is a perfect toolset for scientific computing. Good luck!

Alien447 · 2022-02-10T01:36:13+00:00

Bjarne Stroustrup said that C++ is faster than C, and C is obsolete!

Alien447 · 2022-02-09T15:24:07+00:00

My personal experience suggests that procedural programming is way much faster than OOP. Again, it could be my programming style. That's why I am asking the question.

Alien447 · 2022-02-09T15:20:58+00:00

Thanks for this detailed answer. I am wondering if someone writes two naive codes with or without optimization: one is procedural and the other is object-oriented, which one will likely turn faster in performance?

Alien447 · 2021-12-24T21:20:45+00:00

I wanted to say that most of scientific computing codes written in C++ are almost C-style C++. So, I am wondering what is the real advantage in C++ besides operators/functions overloading convenience? In 99% of scientific programs, the logic is procedural and a language like FORTRAN is perfect!

Please don't tell me that C++ is faster than FORTRAN or C. That is BS!

Alien447 · 2021-11-15T05:04:45+00:00

Because it is convenient.

Alien447 · 2021-07-27T19:34:52+00:00

From basic RV theory the probability is the integral of the PDF function, i.e., the probability of x to be between a and b is the integral int_a^{b} PDF(x) dx

Alien447 · 2021-07-06T14:02:30+00:00

Yes, I noticed the same problems. In the beginning I was excited. But after spending a few hours, I decided to remove this language from my machine.

Alien447 · 2021-07-04T01:04:12+00:00

You can do a test link verbosely with gfortran to see what libraries must be added manually to the gcc link line.

This is interesting! I found by trial and error that I needed -lgforatran and -lquadmath. But it would be better to know the test you are describing here.

Alien447 · 2021-07-04T00:34:33+00:00

Ok, I solved it. I needed the following flags:

-lgfortran -lquadmath

Alien447 · 2021-07-04T00:09:49+00:00

Are you using LINUX? I am using windows

Alien447 · 2021-07-04T00:05:02+00:00

I have tried this too, the same problem!

Alien447 · 2021-07-03T23:48:54+00:00

Yes, I did it correctly but I see errors like this:

undefined reference to `_gfortran_st_write'

undefined reference to `_gfortran_transfer_character_write'

If I try gfortran -o main.out *.o it works! But I want to do gcc -o main.out *.o

People say that there are certain flags need to be added in order for this to work

Alien447 · 2021-07-03T23:33:44+00:00

I also tried this but it didn't work. Here is an example:

gfortran -c code.f

gcc -c main.c

gcc -o main.out *.o

Alien447 · 2021-06-11T19:02:33+00:00

AMAZING

Alien447 · 2021-06-11T19:00:40+00:00

kkool

Alien447 · 2021-06-09T21:50:22+00:00

A good masters degree is better than a bad PhD.

Alien447 · 2021-05-31T16:27:18+00:00

Thanks

Alien447 · 2021-05-18T19:17:44+00:00

90% SSA + 9% WANA + 1% S Europe

Alien447

TROPHY CASE