Compilare: user.c: In function ‘main’: user.c:75:5: warning: implicit declaration of function ‘memset’ [-Wimplicit-function-declaration] memset( mat[0], '1', 1 + m + 1 ); ^ user.c:75:5: warning: incompatible implicit declaration of built-in function ‘memset’ [enabled by default] user.c:71:24: warning: unused variable ‘s’ [-Wunused-variable] int n, m, i, j, l, s, c, b, bi, bj, t; ^ user.c:73:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf( fin, "%d%d ", &n, &m ); ^ user.c:79:14: warning: ignoring return value of ‘fread’, declared with attribute warn_unused_result [-Wunused-result] fread( mat[i] + 1, 1, m + 1, fin ); ^