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What mistake am I making in my code? Exam tomorrow!

I want to print a 4x4 square or stars, with just the outline for e.g **** * * * * **** I am getting only the 1st and 4th row in the output. The code I have right now is the following : for (int row=1;row <=4:row++){ for(int column=1;column <=4;column++){ if (row==1||row==4){ System.out.print("*");} else System.out.println ("");} }}} Im having trouble with nested for loops.

2nd Apr 2017, 3:17 AM
Hasan Zafar
Hasan Zafar - avatar
8 Réponses
+ 4
I just did this fast so i just shortened the names. Please either study off this answer key or try another similar problem without help to assure you understand this concept and good luck on the exam. edit: You can (should) do it how luca said, he/she did it a better way for this problem. (you can ignore my code) for(int r = 1; r <= 4; r++) for(int c = 1; c <= 4; c++){ if(r == 1 || r == 4 || c == 1 || c == 4) System.out.print("*"); else if (c == 2 || c == 3) System.out.print(" "); if(c == 4) System.out.println(); }
2nd Apr 2017, 3:45 AM
Rrestoring faith
Rrestoring faith - avatar
+ 3
*You only want to print to a new line after the 4th col. *leave middle spots blank if its not the 1st or 4th row. You have it so that your going on a new line for all the empty spots. You want to go from top left to top right, and work your way down from left to right. (1) **** (2) * * etc..
2nd Apr 2017, 3:31 AM
Rrestoring faith
Rrestoring faith - avatar
+ 1
else{ if(column==1||column==4){ ... } else{ ... } } EDIT: What Rrestoring says is true, you probably want to print all the line at the same time so it is aligned. I.E.: for(...){ if(row==1||row==4) println("****"); else println("* *"); }
2nd Apr 2017, 3:34 AM
Luca Garrera
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That's because if the row is not 1 or 4 you print blank lines, you should print something in the else part if the column is 1 or 4 and if not, print spaces.
2nd Apr 2017, 3:21 AM
Luca Garrera
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could you fix the code?
2nd Apr 2017, 3:23 AM
Hasan Zafar
Hasan Zafar - avatar
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If you could give me a link to edit it I can try and even share the code with you :) but I won't copy the code manually since I'm on my phone.
2nd Apr 2017, 3:24 AM
Luca Garrera
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how do I put an if condition like you said in the else part?
2nd Apr 2017, 3:32 AM
Hasan Zafar
Hasan Zafar - avatar
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thank you so muchh!❤
2nd Apr 2017, 3:42 AM
Hasan Zafar
Hasan Zafar - avatar