risipa.cpp: In function 'int rest3()': risipa.cpp:16: warning: comparison between signed and unsigned integer expressions risipa.cpp: In function 'void adun(int)': risipa.cpp:33: warning: comparison between signed and unsigned integer expressions risipa.cpp: In function 'int main()': risipa.cpp:96: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result