cmmmc.cpp: In function 'int main()': cmmmc.cpp:92: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result cmmmc.cpp:95: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result cmmmc.cpp: In function 'void perechi()': cmmmc.cpp:28: warning: 'r2' may be used uninitialized in this function cmmmc.cpp:28: warning: 'r1' may be used uninitialized in this function