Eroare de compilare: main.cpp: In function 'int main()': main.cpp:31:17: error: 'a' was not declared in this scope 31 | a=c/2*(c+1); | ^ main.cpp:33:17: error: 'a' was not declared in this scope 33 | a=(c+1)/2*c; | ^ main.cpp:34:19: error: 'a' was not declared in this scope 34 | rasp+=a; | ^ main.cpp:39:9: error: 'a' was not declared in this scope 39 | a=c/2*(c+1); | ^ main.cpp:41:9: error: 'a' was not declared in this scope 41 | a=(c+1)/2*c; | ^ main.cpp:42:11: error: 'a' was not declared in this scope 42 | rasp+=a; | ^ Non zero exit status: 1