Compilare: user.c:3:40: warning: built-in function ‘pow’ declared as non-function [enabled by default] long long T, i, p, n, k, m, a, b, ans, pow, loop; ^ user.c: In function ‘main’: user.c:33:23: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] if(n==1 || !(n%2) && n!=2){ ^ user.c:26:7: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(file1, "%lld", &T); ^ user.c:30:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(file1, "%lld", &n); ^ user.c:31:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(file1, "%lld", &n); ^