Compilare: main.c: In function 'main': main.c:6:20: warning: missing braces around initializer [-Wmissing-braces] int a[17][17]={0,0}; ^ main.c:6:20: note: (near initialization for 'a') main.c:26:7: warning: this 'for' clause does not guard... [-Wmisleading-indentation] for(j=0;j<m;j++) ^~~ main.c:28:8: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for' if(sl<0) ^~ main.c:12:4: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf(fp, "%d %d", &n,&m); ^~~~~~~~~~~~~~~~~~~~~~~~~~ main.c:19:14: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf(fp, "%d",&a[i][j]); ^~~~~~~~~~~~~~~~~~~~~~~~~ main.c:40:30: warning: 'suma' may be used uninitialized in this function [-Wmaybe-uninitialized] for(j=0;j<m;j++) suma+=a[i][j]; ~~~~^~~~~~~~~