atac2.cpp: In function 'void dijkstra1(short int)': atac2.cpp:40: warning: comparison between signed and unsigned integer expressions atac2.cpp:50: warning: comparison between signed and unsigned integer expressions atac2.cpp: In function 'short int dijkstra2()': atac2.cpp:75: warning: comparison between signed and unsigned integer expressions atac2.cpp: In function 'int main()': atac2.cpp:139: warning: comparison between signed and unsigned integer expressions atac2.cpp:113: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result atac2.cpp:114: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result atac2.cpp:117: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result atac2.cpp:119: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result atac2.cpp:122: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result