Compilare: user.c: In function ‘myqsort’: user.c:12:13: warning: implicit declaration of function ‘swap’ [-Wimplicit-function-declaration] swap(v,b,e); ^ user.c: At top level: user.c:20:13: warning: conflicting types for ‘swap’ [enabled by default] inline void swap(int *x,int b,int e){ ^ user.c:12:13: note: previous implicit declaration of ‘swap’ was here swap(v,b,e); ^ user.c: In function ‘querry’: user.c:28:9: warning: implicit declaration of function ‘mod’ [-Wimplicit-function-declaration] if(d[aib[i]]>max&&mod(cmmdc(v2[aib[i]],v2[y]))) ^ user.c:28:9: warning: implicit declaration of function ‘cmmdc’ [-Wimplicit-function-declaration] user.c: In function ‘main’: user.c:57:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fi,"%d" ,&n); ^ user.c:59:14: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fi,"%d" ,&v[i]); ^ user.c: In function ‘update’: user.c:37:1: warning: control reaches end of non-void function [-Wreturn-type] } ^