Compilare: main.cpp: In function 'HugeN add(HugeN, HugeN)': main.cpp:20:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<a.nr.size() || i<b.nr.size() || t>0;i++){ ~^~~~~~~~~~~~ main.cpp:20:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<a.nr.size() || i<b.nr.size() || t>0;i++){ ~^~~~~~~~~~~~ main.cpp:21:9: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(i<a.nr.size()){ ~^~~~~~~~~~~~ main.cpp:24:9: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(i<b.nr.size()){ ~^~~~~~~~~~~~ main.cpp: In function 'HugeN mult(HugeN, int)': main.cpp:35:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<a.nr.size() || t>0;i++){ ~^~~~~~~~~~~~ main.cpp:36:9: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(i<a.nr.size()){ ~^~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:52:22: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d",&n); ^ main.cpp:56:24: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d",&x); ^