Compilare: user.cpp: In function ‘int poz(int, int, int)’: user.cpp:9:14: warning: unused variable ‘i’ [-Wunused-variable] long int i,j,poz=-1,min; ^ user.cpp:9:16: warning: unused variable ‘j’ [-Wunused-variable] long int i,j,poz=-1,min; ^ user.cpp: In function ‘int main()’: user.cpp:51:33: warning: format ‘%d’ expects argument of type ‘int*’, but argument 2 has type ‘long int*’ [-Wformat=] scanf("%d", &m[i][j]); ^ user.cpp:118:31: warning: format ‘%d’ expects argument of type ‘int’, but argument 2 has type ‘long int’ [-Wformat=] printf("%d %d\n", l, c); ^ user.cpp:118:31: warning: format ‘%d’ expects argument of type ‘int’, but argument 3 has type ‘long int’ [-Wformat=] user.cpp:141:27: warning: format ‘%d’ expects argument of type ‘int’, but argument 2 has type ‘long int’ [-Wformat=] printf("%d %d\n", l, c); ^ user.cpp:141:27: warning: format ‘%d’ expects argument of type ‘int’, but argument 3 has type ‘long int’ [-Wformat=] user.cpp:46:22: warning: unused variable ‘lg’ [-Wunused-variable] long int i,j,max,lg,lm,lmax,cmax,vo,vp,ci,li,ret,np,l,c; ^ user.cpp:46:25: warning: unused variable ‘lm’ [-Wunused-variable] long int i,j,max,lg,lm,lmax,cmax,vo,vp,ci,li,ret,np,l,c; ^ user.cpp:46:41: warning: unused variable ‘vp’ [-Wunused-variable] long int i,j,max,lg,lm,lmax,cmax,vo,vp,ci,li,ret,np,l,c; ^ user.cpp:46:44: warning: variable ‘ci’ set but not used [-Wunused-but-set-variable] long int i,j,max,lg,lm,lmax,cmax,vo,vp,ci,li,ret,np,l,c; ^ user.cpp:46:47: warning: variable ‘li’ set but not used [-Wunused-but-set-variable] long int i,j,max,lg,lm,lmax,cmax,vo,vp,ci,li,ret,np,l,c; ^ user.cpp:44:40: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("19-spider.in", "r", stdin); ^ user.cpp:45:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("spider.out", "w", stdout); ^ user.cpp:48:31: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%ld %ld", &nl, &nc); ^ user.cpp:51:34: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &m[i][j]); ^ user.cpp:112:20: warning: ‘cmax’ may be used uninitialized in this function [-Wmaybe-uninitialized] ret=poz(l,c,vo); ^ user.cpp:112:20: warning: ‘lmax’ may be used uninitialized in this function [-Wmaybe-uninitialized]