Borderou de evaluare (job #721432)

Compilare: main.c: In function 'main': main.c:4:121: warning: ignoring return value of 'fscanf' declared with attribute 'warn_unused_result' [-Wunused-result] 4 | FILE*fin,*fout;int main(){fin=fopen("formula1.in","r");fout=fopen("formula1.out","w");int c,i;long long s,k,n,s1,v;s1=0;fscanf(fin,"%d%lld%lld",&c,&k,&n);v=k*2-1;v=v*v;if(c==2){for(i=1;i<=n;i++){v=i*2-1;v=v*v;s1+=v/2;}s1=s1*2+1;s=sqrt(s1);if(s%2==0)s--;v=s*s;}fprintf(fout,"%lld",v);return 0;} | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~