piramide.cpp: In function 'int main()': piramide.cpp:5: warning: unused variable 'f' piramide.cpp:9: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result piramide.cpp:12: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result piramide.cpp:5: warning: 'ci' may be used uninitialized in this function