int i,j,m,n; double** array; int main(void) { printf("strings pls:"); scanf_s("%d",&m); printf("columns pls:"); scanf_s("%d", &n); for (i = 0; i < m; i++) { for (j = 0; j < n; j++) { array[i][j] = rand(); } printf("&lf", array[i][j]); } getchar(); return 0; }

Closed due to the fact that off-topic participants ߊߚߤߘ , cheops , Jarvis_J , AivanF. , Kromster Jul 17 '18 at 11:19 .

It seems that this question does not correspond to the subject of the site. Those who voted to close it indicated the following reason:

  • "The question is caused by a problem that is no longer reproduced or typed . Although similar questions may be relevant on this site, solving this question is unlikely to help future visitors. You can usually avoid similar questions by writing and researching a minimum program to reproduce the problem before publishing the question. " - ߊߚߤߘ, AivanF.
If the question can be reformulated according to the rules set out in the certificate , edit it .

  • four
    And who will allocate memory for the array? - AnT
  • And still, lines in a matrix are nevertheless rows , but not strings . - andy.37

2 answers 2

Just not allocated memory for the array ...
Before writing in array , it is tedious to allocate memory. About

 array = malloc(m*sizeof(double*)); for(int i = 0; i < m; ++i) array[i] = malloc(n*sizeof(double));

And also - this

 printf("&lf", array[i][j]);

will just output &lf :)

  • It does not work ((How the code will look like - user237701
 и все ровно ошибка( int m,n,i,j; double **arrayl; int main() { printf("strings pls:"); scanf_s("%d",&m); printf("columns pls:"); scanf_s("%d", &n); arrayl = (double**)calloc(n,sizeof(double*)); for (int j = 0; j < m; j++) { arrayl = (double**)calloc(m, sizeof(double)); } for (i = 0; i < m; i++) { for (j = 0; j <n; j++) { arrayl[i][j] = rand() % 30; } } printf("&lf", arrayl[i][j]); getchar(); return 0;

}

  • rightly. You have been given a code above - compare with yours. - Igor
  • and how to display an array? - user237701
  • first allocate memory for it as shown in the answer above - Igor