acolor.cpp: In function 'int main()': acolor.cpp:77: warning: unused variable 'k' acolor.cpp:77: warning: unused variable 'ii' acolor.cpp:77: warning: unused variable 'jj' acolor.cpp:77: warning: unused variable 'free' acolor.cpp:78: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result acolor.cpp:83: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result acolor.cpp:90: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result