Eroare de compilare: user.cpp: In function ‘int main()’: user.cpp:13:20: error: ‘strlen’ was not declared in this scope int n= strlen(c); ^ user.cpp:15:22: error: ‘strchr’ was not declared in this scope if(strchr(v, c[0])) arr[0] = 0; ^ user.cpp:19:30: error: ‘strchr’ was not declared in this scope if(strchr(v, c[i])) arr[i] = i; ^ user.cpp:25:30: error: ‘strchr’ was not declared in this scope if(strchr(v, c[i])&&!f) ^ user.cpp:37:38: error: ‘strchr’ was not declared in this scope if(strchr(v, c[i])) ^ user.cpp:9:25: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%s", c); ^ user.cpp:12:25: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d",&k); ^