colina.cpp: In function 'int main()': colina.cpp:24: warning: unused variable 'j' colina.cpp:24: warning: unused variable 'cp' colina.cpp:25: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result colina.cpp:27: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result colina.cpp:32: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result