Compilare: user.cpp: In function ‘int main()’: user.cpp:27:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(p[1][i] < min1) ^ user.cpp:34:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(p[1][i] < min2) ^ user.cpp:45:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(p[i+1][j] < min1n) ^ user.cpp:52:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(p[i+1][j] < min2n) ^ user.cpp:59:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(p[i+1][j] < min1n) ^ user.cpp:66:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(p[i+1][j] < min2n) ^ user.cpp:14:9: warning: unused variable ‘sum’ [-Wunused-variable] int sum = 0,n,m,i,j,min1 = ATMX,min2 = ATMX,min1n,min2n,jmin,jminn; ^ user.cpp:12:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("lacusta.in","r",stdin); ^ user.cpp:13:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("lacusta.out","w",stdout); ^ user.cpp:15:27: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d\n",&n,&m); ^ user.cpp:18:34: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%c ",&l[i][j]); ^ user.cpp:19:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("\n"); ^ user.cpp:57:47: warning: ‘jminn’ may be used uninitialized in this function [-Wmaybe-uninitialized] s[i][j] = min2 + l[i][j] - '0'; ^