Compilare: user.c: In function ‘suma’: user.c:9:5: warning: ‘return’ with a value, in function returning void [enabled by default] return 0; ^ user.c:5:15: warning: variable ‘s’ set but not used [-Wunused-but-set-variable] int i,j,k,s; ^ user.c:5:13: warning: unused variable ‘k’ [-Wunused-variable] int i,j,k,s; ^ user.c:5:11: warning: unused variable ‘j’ [-Wunused-variable] int i,j,k,s; ^ user.c:5:9: warning: unused variable ‘i’ [-Wunused-variable] int i,j,k,s; ^ user.c: In function ‘main’: user.c:25:5: warning: implicit declaration of function ‘malloc’ [-Wimplicit-function-declaration] a=(int***)malloc(m*sizeof(int*)); ^ user.c:25:15: warning: incompatible implicit declaration of built-in function ‘malloc’ [enabled by default] a=(int***)malloc(m*sizeof(int*)); ^ user.c:64:13: warning: implicit declaration of function ‘free’ [-Wimplicit-function-declaration] free(a[i][j]); ^ user.c:64:13: warning: incompatible implicit declaration of built-in function ‘free’ [enabled by default] user.c:66:9: warning: incompatible implicit declaration of built-in function ‘free’ [enabled by default] free(a[i]); ^ user.c:68:5: warning: incompatible implicit declaration of built-in function ‘free’ [enabled by default] free(a); ^ user.c:15:26: warning: unused variable ‘b’ [-Wunused-variable] int ***a,i,j,k,m=0,n,b; ^ user.c:16:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(pFile,"%i",&n); ^ user.c:40:23: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(pFile,"%i",&a[i][j][k]); ^