Eroare de compilare: user.cpp: In function ‘int valid(int)’: user.cpp:11:6: error: ‘x’ was not declared in this scope if(x[k]<=x[i]) ^ user.cpp: In function ‘int main()’: user.cpp:34:3: error: ‘x’ was not declared in this scope x[k1]=0; ^ user.cpp:73:31: error: invalid conversion from ‘int’ to ‘FILE* {aka _IO_FILE*}’ [-fpermissive] fprintf(g,"%d/%d",s,pow(2,n)); ^ In file included from /usr/include/stdio.h:934:0, from user.cpp:1: /usr/include/i386-linux-gnu/bits/stdio2.h:96:1: error: initializing argument 1 of ‘int fprintf(FILE*, const char*, ...)’ [-fpermissive] fprintf (FILE *__restrict __stream, __const char *__restrict __fmt, ...) ^ user.cpp:73:31: warning: format ‘%d’ expects argument of type ‘int’, but argument 4 has type ‘double’ [-Wformat=] fprintf(g,"%d/%d",s,pow(2,n)); ^ user.cpp:19:19: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d",&t); ^ user.cpp:21:25: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d%d",&r,&c); ^ user.cpp:24:24: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%c",&car); ^