Compilare: main.c: In function 'main': main.c:46:21: warning: format '%s' expects argument of type 'char *', but argument 3 has type 'char (*)[2000]' [-Wformat=] fscanf(fin, "%s", &mat[l]); ^ main.c:41:10: warning: variable 'ch' set but not used [-Wunused-but-set-variable] char ch; ^~ main.c:43:5: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d%d", &n, &m); ^~~~~~~~~~~~~~~~~~~~~~~~~~~ main.c:46:7: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%s", &mat[l]); ^~~~~~~~~~~~~~~~~~~~~~~~~~