Compilare: main.c: In function 'main': main.c:6:51: warning: unused variable 'j' [-Wunused-variable] int n, k, v[25001], a[25001], i, r, p=0, c=0, j; ^ main.c:6:46: warning: unused variable 'c' [-Wunused-variable] int n, k, v[25001], a[25001], i, r, p=0, c=0, j; ^ main.c:6:41: warning: unused variable 'p' [-Wunused-variable] int n, k, v[25001], a[25001], i, r, p=0, c=0, j; ^ main.c:7:5: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d", &n); ^~~~~~~~~~~~~~~~~~~~~ main.c:15:9: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d", &v[i]); ^~~~~~~~~~~~~~~~~~~~~~~~