Compilare: user.c: In function ‘descompunere’: user.c:11:5: warning: implicit declaration of function ‘sqrt’ [-Wimplicit-function-declaration] rad = sqrt(nr); ^ user.c:11:11: warning: incompatible implicit declaration of built-in function ‘sqrt’ [enabled by default] rad = sqrt(nr); ^ user.c: In function ‘main’: user.c:31:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d", &n); ^