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POPopulating a 3D array of structures in C
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2013-06-18T21:36:24.873
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2013-06-21T23:13:34.007
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I have a 3D array of structures. The 3D grid is such that each of the three sides are equal. Each cell of the 3D grid has 5 elements, say color, temperature, B(x), B(y) and B(z). I have to populate each cell of the array of structures with 5 binary files, one for each element. The array of structures look like this: <pre><code>struct physical { float color; float temperature; float Bx,By,Bz; }; extern struct physical ***physical; </code></pre> What I need is some idea how I would carry out the populating of the arrays in C. I have the following code that I have implemented to read the data from the binary files into the array of structures: <pre><code>#include <stdio.h> #include <stdlib.h> #include <string.h> #include <math.h> int i,j,k,ibox; /* Loop indices for the physical grid */ FILE *p,*q,*r,*s,*t; p = fopen("phys_col_0107.bin","rb"); q = fopen("phys_temp_0107.bin","rb"); r = fopen("phys_Bx_0107.bin","rb"); s = fopen("phys_By_0107.bin","rb"); t = fopen("phys_Bz_0107.bin","rb"); if (!p) { printf("Unable to open color file!"); return 0; } else if (!q) { printf("Unable to open the temp file!"); return 0; } else if (!r) { printf("Unable to open the Bx file!"); return 0; } else if (!s) { printf("Unable to open the By file!"); return 0; } else if (!t) { printf("Unavle to open the Bz file!"); return 0; } for ( j = 0 ; j < ny ; j++ ) { for (k=0;k<nz;k++) { for (i=0;i<nx;i++) { fread( &physical[i][j][k].color , sizeof(physical[i][j][k].color) , 1 , p ) ; fread( &physical[i][j][k].temperature , sizeof(physical[i][j][k].temperature) , 1 , q ) ; fread( &physical[i][j][k].Bx , sizeof(physical[i][j][k].Bx) , 1 , r ) ; fread( &physical[i][j][k].By , sizeof(physical[i][j][k].By) , 1 , s ) ; fread( &physical[i][j][k].Bz , sizeof(physical[i][j][k].Bz) , 1 , t ) ; } } } fclose(p); fclose(q); fclose(r); fclose(s); fclose(t); </code></pre> I just need to know whether I am going about this the right way.....thanks!!
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Populating a 3D array of structures in C
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