how can i copy the elements of two two-dimensional arrays in one dimensional array in descending order please reply me soon plz plz

Code: #include <stdio.h> /* 2 methods are shown - copysort() is easier */ void copysort(); void searchcopy(); int matrix_a[ 3 ][ 3 ] = { { 101, 47, 198 }, { 1024, 479, 1978 }, { 1801, 4437, 18 } }, matrix_b[ 3 ][ 3 ] = { { 1069, 427, 198 }, { 15249, 31479, 19078 }, { 18001, 37, 47 } }, array_sort[ 18 ]; void main() { searchcopy(); copysort(); } void copysort() { /* simply move all elements to single dim array and sort single dim array */ int i, j, maxindex; for( i = 0; i < 3; i++ ) for( j = 0; j < 3; j++ ) array_sort[ i * 3 + j ] = matrix_a[ i ][ j ]; for( i = 0; i < 3; i++ ) for( j = 0; j < 3; j++ ) array_sort[ 9 + i * 3 + j ] = matrix_b[ i ][ j ]; for( i = 0; i < 17; i++ ) { for( j = maxindex = i; j < 18; j++ ) if( array_sort[ j ] > array_sort[ maxindex ] ) maxindex = j; if( maxindex != i ) { j = array_sort[ i ]; array_sort[ i ] = array_sort[ maxindex ]; array_sort[ maxindex ] = j; } } for( i = 0; i < 18; i++ ) { if( i % 9 == 0 ) printf("\n\t\t"); printf("%5d ", array_sort[ i ]); } printf("\n\n"); } void searchcopy() { /* while copying each element to single dim array search for largest element in both matrices combined and mark the copied element by setting a bit corr to the index of the element so that it is skipped in subsequent searches */ int destindex, srcindex, copied, srcrow, srccol, maxindex, maxval, srcval; for( destindex = 0, copied = 0; destindex < 18; destindex++ ) { for( srcindex = 0, maxval = maxindex = -1; srcindex < 18; srcindex++ ) { if( copied & (1 << srcindex) ) /* skip this element if already moved - see comment below */ continue; srcrow = (srcindex % 9) / 3; srccol = srcindex % 3; if( srcindex < 9 ) srcval = matrix_a[ srcrow ][ srccol ]; else srcval = matrix_b[ srcrow ][ srccol ]; if( srcval > maxval || maxindex < 0 ) { maxindex = srcindex; maxval = srcval; } } array_sort[ destindex ] = maxval; copied |= (1 << maxindex); /* set bit corr to index to mark this matrix element for skipping in subsequent search */ } for( srcindex = 0; srcindex < 18; srcindex++ ) { if( srcindex % 9 == 0 ) printf("\n\t\t"); printf("%5d ", array_sort[ srcindex ]); } printf("\n\n"); }