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printf("This is the general LU factorization
method.\n");printf("The array will be input from a text file in the
order:\n");printf("A(1,1), A(1,2), ..., A(1,N), A(2,1), A(2,2),
..., A(2,N),\n");printf("..., A(N,1), A(N,2), ...,
A(N,N)\n\n");printf("Place as many entries as desired on each line,
but separate ");printf("entries with\n");printf("at least one
blank.\n\n\n");printf("Has the input file been created? - enter Y
or N.\n");scanf("%c",&AA);*OK = false;if ((AA == 'Y') || (AA ==
'y')) {
printf("Input the file name in the form -
drive:name.ext\n");printf("for example: A:DATA.DTA\n");scanf("%s",
NAME);INP = fopen(NAME, "r");*OK = false;while (!(*OK)) {
printf("Input the dimension n - an integer.\n");scanf("%d",
N);if (*N > 0) {
for (I=1; I
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if (ISW == 0)fprintf(OUP, "The diagonal of L consists of all
entries = 1.0\n");
elsefprintf(OUP, "The diagonal of U consists of all entries =
1.0\n");
fprintf(OUP, "\nEntries of L below/on diagonal and entries of U
above");fprintf(OUP, "/on diagonal\n");fprintf(OUP, "- output by
rows in overwrite format:\n");for (I=1; I
