Compilare: main.cpp: In function 'int gcd(int, int)': main.cpp:9:5: warning: this 'if' clause does not guard... [-Wmisleading-indentation] if(x==y) ^~ main.cpp:12:9: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'if' if(x>y) ^~ main.cpp: In function 'int main()': main.cpp:34:8: warning: unused variable 't' [-Wunused-variable] { int t=0,i; ^ main.cpp:34:12: warning: unused variable 'i' [-Wunused-variable] { int t=0,i; ^ main.cpp:35:18: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d",&n); ^