Compilare: main.cpp: In function 'int main()': main.cpp:25:8: warning: suggest parentheses around comparison in operand of '==' [-Wparentheses] if (a==b==1){ ~^~~ main.cpp:11:23: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d", &a); ^ main.cpp:12:23: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d", &b); ^