ecuatii.cpp: In function 'int main()': ecuatii.cpp:32: warning: comparison between signed and unsigned integer expressions ecuatii.cpp:59: warning: comparison between signed and unsigned integer expressions ecuatii.cpp:66: warning: comparison between signed and unsigned integer expressions ecuatii.cpp:76: warning: comparison between signed and unsigned integer expressions ecuatii.cpp:83: warning: comparison between signed and unsigned integer expressions ecuatii.cpp:104: warning: comparison between signed and unsigned integer expressions ecuatii.cpp:111: warning: comparison between signed and unsigned integer expressions ecuatii.cpp:121: warning: comparison between signed and unsigned integer expressions ecuatii.cpp:128: warning: comparison between signed and unsigned integer expressions