random7

Hi, everyone I have a question about reading column data from file. helium.dat He 1.31 He 1.32 He 1.39 He 1.41 He 1.38 He 1.39 He 1.21 He 1.45 He 2.31 I want to print just the 2nd column data(number) from helium.dat like below 1.31 1.32 1.39 1.41 1.38 1.39 …

this is some of code. I have a question. what is the meaning of '?' and ':1;' [just this part] [code=syntax] int t, dt, * cnt, tmax=0; cnt=(int*)calloc(M,sizeof(int)); ... /* Compute the mean-squared displacement using the straightforward algorithm */ fprintf(stderr,"# computing...\n");fflush(stderr); for (t=0;t<M;t++) { for (dt=1;(t+dt)<tmax;dt++) { cnt[dt]++; /* number …

I have a question about reading array from file. I wrote some array at file like below. file name: xy0.dat [2, 4, 6] [4, 8, 12] ... ... Now, I want to read this array(not string) at my original file. I want to define x0[0] = [2,4,6] and x0[1] = …

I did vector calculation like blow. Here I just use 2 vector addition C =A1+A2 But, now I want to add many vecters like A1+A2+...+A35 Is there any simple method beside ( I don't want to type continuously like A1,A2,A3,A4.....A35) ex) void sum(vector<long double>& C,const vector<long double>& A0,const vector<long double>& …