Compilare: user.cpp:64:5: warning: "/*" within comment [-Wcomment] /*for(int i=1; i<=k; ++i){ ^ user.cpp: In function ‘int main()’: user.cpp:13:26: warning: unused variable ‘xf’ [-Wunused-variable] int cate=0, i=1, xi, xf, maxx=-1, maxi, maxf; ^ user.cpp:12:37: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d%d%s", &n, &k, s+1); ^ user.cpp:96:5: warning: ‘maxf’ may be used uninitialized in this function [-Wmaybe-uninitialized] for(int i=maxi; i<=maxf; ++i) ^ user.cpp:96:5: warning: ‘maxi’ may be used uninitialized in this function [-Wmaybe-uninitialized]