Compilare: user.cpp: In function ‘int main()’: user.cpp:22:24: warning: format ‘%u’ expects argument of type ‘unsigned int*’, but argument 3 has type ‘ulong* {aka long unsigned int*}’ [-Wformat=] fscanf(fin,"%ul",&t); ^ user.cpp:26:37: warning: format ‘%u’ expects argument of type ‘unsigned int*’, but argument 3 has type ‘ulong* {aka long unsigned int*}’ [-Wformat=] fscanf(fin,"%ul %ul", &a, &b); ^ user.cpp:26:37: warning: format ‘%u’ expects argument of type ‘unsigned int*’, but argument 4 has type ‘ulong* {aka long unsigned int*}’ [-Wformat=] user.cpp:27:41: warning: format ‘%u’ expects argument of type ‘unsigned int’, but argument 3 has type ‘ulong {aka long unsigned int}’ [-Wformat=] fprintf(fout,"%ul\n", cmmdc(a,b)); ^ user.cpp:17:17: warning: unused variable ‘c’ [-Wunused-variable] ulong t,a,b,c,i; ^ user.cpp:22:25: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%ul",&t); ^ user.cpp:26:38: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%ul %ul", &a, &b); ^