Compilare: main.c: In function 'main': main.c:28:7: warning: 'nr_col' may be used uninitialized [-Wmaybe-uninitialized] 28 | fprintf(fout, "%d %d", nr_lin, nr_col); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.c:6:24: note: 'nr_col' was declared here 6 | int cer, n, nr_lin, nr_col, index, s, aux; | ^~~~~~ main.c:28:7: warning: 'nr_lin' may be used uninitialized [-Wmaybe-uninitialized] 28 | fprintf(fout, "%d %d", nr_lin, nr_col); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.c:6:16: note: 'nr_lin' was declared here 6 | int cer, n, nr_lin, nr_col, index, s, aux; | ^~~~~~