suma.cpp: In function 'int main()': suma.cpp:11: warning: unused variable 'l' suma.cpp:11: warning: unused variable 'c' suma.cpp:11: warning: unused variable 's' suma.cpp:11: warning: unused variable 'x' suma.cpp:11: warning: unused variable 'd' suma.cpp:11: warning: unused variable 'k' suma.cpp:11: warning: unused variable 'y' suma.cpp:11: warning: unused variable 'j' suma.cpp:13: warning: unused variable 'l2' suma.cpp:13: warning: unused variable 'l3' suma.cpp:12: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result