Compilare: main.c: In function 'main': main.c:53:6: warning: implicit declaration of function 'malloc' [-Wimplicit-function-declaration] A = malloc(sizeof(char) * lungime_sir + 1); ^~~~~~ main.c:53:6: warning: incompatible implicit declaration of built-in function 'malloc' main.c:53:6: note: include '<stdlib.h>' or provide a declaration of 'malloc' main.c:49:2: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d", &lungime_sir); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.c:51:2: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d", &nr_subsiruri); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.c:57:2: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%s", A); ^~~~~~~~~~~~~~~~~~~ main.c:63:3: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%s", B); ^~~~~~~~~~~~~~~~~~~