Pass array to functions in C

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Pass array to functions in C

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#2 by (0 votes)

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Good night, next I have a problem when passing an array to a function in C. I have the following code

void funcao(int mat[][num]);
int main() {
    scanf(%d,&num);
}

It is basically the following, I define the size of the array in the main function, so the statement of the function above the code points out that a is not a constant then it gives error, I wanted to know how I can this matrix for a function. Vlw

c c++ matriz

asked by anonymous 21.06.2017 / 01:19

2 answers

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score 0 · Answer 1

0

Try to put it like this:

void funcao(int **mat, int dim_linha, int dim_coluna);

Where mat is a multidimensional vector, and you pass the dimension of the array

24.06.2017 / 02:50

score 0 · Answer 2

I suggest you use dynamic allocation:

#include <stdio.h>
#include <stdlib.h>

void funcao(int **mat, int num);
int main()
{
    int num;
    scanf("%d", &num);
    int **mat=(int**)malloc(num*sizeof(int*));
    for(int i=0; i<num; i++)
        mat[i]=(int*)malloc(num*sizeof(int));
    funcao(mat, num);
}