Compilare: main.cpp: In function 'int main()': main.cpp:77:34: warning: unused variable 'k' [-Wunused-variable] int n , m , val, c , i , j , k , ii , jj , free , d; ^ main.cpp:77:38: warning: unused variable 'ii' [-Wunused-variable] int n , m , val, c , i , j , k , ii , jj , free , d; ^~ main.cpp:77:43: warning: unused variable 'jj' [-Wunused-variable] int n , m , val, c , i , j , k , ii , jj , free , d; ^~ main.cpp:77:48: warning: unused variable 'free' [-Wunused-variable] int n , m , val, c , i , j , k , ii , jj , free , d; ^~~~ main.cpp:78:42: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf (fin,"%d%d%d%d",&n,&m,&val,&c); ^ main.cpp:83:34: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf (fin,"%d",&cul[i]); ^ main.cpp:90:39: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf (fin,"%d",&b[i][j]); ^