Matrix display in C

Solved

ma3reft Posted messages 15 Status Member -
Anonymous user - 9 Nov 2019 at 12:25

Hello,

Here is the translation of the provided text into English:

Hello,

I’m programming in C under Dev-C++ and I’d like to display a tabulated matrix in proper form. For example I want to display: matrix[2][3] = {{1,3,8},{5,6,9}}.

I write:
for(i=0,i++,i<2) for(j=0,j++,j<3){ printf("%d /t",matrix[i][j]); }

I get displayed: 1 3 8 5 6 9

What I want to display is: 1 3 8 on one line and 5 6 9 on the following line.

How to do? I’m counting on your precious help..thanks in advance :)

Configuration: Windows Vista
Safari 532.0

4 answers

Answer 1 / 4

benyahia rafik

#define m 2
#define n 3
main()
{
int tab [m][n]= {{1,2,3},{4,5,6}};
int i,j;
for(i=0; i<m; i++)

{
for(j=0; j<n; j++)
{
printf("%d",tab[i][j]);
printf(j<n-1?"\t":"\n");
}
}
}

abdelali_1119

I didn’t understand that:
printf(j<n-1?"\t":"\n");
and thanks

Anonymous user > abdelali_1119

Hello, this is an if then else in one line

 if?then:else j<n-1?"\t":"\n"

Answer 2 / 4

fiddy Posted messages 441 Registration date Status Contributor Last intervention 1 847

Hi,

 for(i=0,i++,i<2) for(j=0,j++,j<3){ printf("%d /t",matrice[i][j]); }

Attention, in the for there are semicolons and not just commas. Also this isn’t /t for tabulation but \t (with a backslash). And finally, the increment is at the end in the for and not in the middle.
As you can see in your code, you just put a tabulation and not a newline. The compiler has no reason to go to a new line. It prints whatever you ask it to.

What it would look like:

 for(i=0;i<2;i++) { for(j=0;j<3;j++) { printf("%d\t",matrice[i][j]); } /*we go to a new line after printing a full line*/ putchar('\n'); }

Cheers,

Google is your friend

nes77 Posted messages 1 Status Member

Please, if I wanted to display the lines of a matrix I can't put:

for (i=0;i<3;i++) printf(%d\t,M[i]) ; //tout simplement putchar('\n');

assuming my matrix is M

[Dal] Posted messages 6122 Registration date Status Contributor Last intervention 1 108

Hi nes77, If you have a question, it’s better to create a new thread rather than bumping a post that’s six years old (and moreover a “resolved” post). Also, your code is missing quotes in the following line:

printf("%d\t",M[i]);

, which will work for a one-dimensional array of integers, but not for a "matrix" — or rather a two-dimensional C array of integers — for which the method explained by fiddy should be used.

Matrix display in C

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