piramida.cpp: In function 'void Piramida(int)': piramida.cpp:28: warning: unused variable 'sum' piramida.cpp: In function 'int main()': piramida.cpp:47: warning: format '%s' expects type 'char*', but argument 3 has type 'char (*)[90]' piramida.cpp:50: warning: NULL used in arithmetic piramida.cpp:56: warning: array subscript has type 'char' piramida.cpp:47: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result