0_0_31930789_6254.cpp: In function 'int main()': 0_0_31930789_6254.cpp:8:37: error: 'calloc' was not declared in this scope A=(int*)calloc(sizeof(int),n); ^ 0_0_31930789_6254.cpp:46:15: error: 'free' was not declared in this scope free(A); ^