Compilare: user.cpp: In function ‘int main()’: user.cpp:16:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=0;i<strlen(s);i++) { ^ user.cpp:9:15: warning: unused variable ‘len’ [-Wunused-variable] int z,test,i,len,j,ok; ^ user.cpp:10:47: warning: unused variable ‘sir3’ [-Wunused-variable] char s[131073], sir1[131072], sir2[131072],c,sir3[131072]; ^ user.cpp:12:20: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf (f,"%d",&z); ^ user.cpp:14:21: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf (f,"%c",&c); ^ user.cpp:15:21: warning: ignoring return value of ‘char* fgets(char*, int, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fgets (s,131073,f); ^ user.cpp:36:17: warning: ignoring return value of ‘int system(const char*)’, declared with attribute warn_unused_result [-Wunused-result] system("PAUSE"); ^