Compilare: user.c: In function ‘main’: user.c:12:9: warning: unused variable ‘i’ [-Wunused-variable] int i; ^ user.c: In function ‘spirala’: user.c:42:42: warning: unused variable ‘j’ [-Wunused-variable] int lin = 0, col = 0, anterior=0, i, j; ^ user.c:42:27: warning: unused variable ‘anterior’ [-Wunused-variable] int lin = 0, col = 0, anterior=0, i, j; ^ user.c: In function ‘citire’: user.c:29:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%d",&nr_lin); ^ user.c:30:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%d",&nr_col); ^ user.c:34:19: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%d",&matrice[i][j]); ^