magic.c.bak

#include <stdio.h>
#include <string.h>
#include <ctype.h>

#define N 5
/* PN = for power N */
#define PN ((N)*(N))
/* SN - for sum N's */
#define SUM ((N)*((PN)+(1))/(2))
/* TC - for total chars */
#define TC ((PN)*(2))

int checksum(int *s);
void print_t(int *t);
void stot (char *s, int *t);
void readline(char *s);
int issquare(int square[][N]);
void ttosquare(int *t, int square[][], int lim1, int lim2);
void print_square (int square[][]);
void print_error(int *t);
int isline(int line[], int lim);

main()
{
        int square[N][N]={0};
        int t[PN] = {0}, result;
        char s[] = "15 8 1 24 17 16 14 7 5 23 22 20 13 6 4 3 21 19 12 10 9 2 25 18 11";
//      printf("enter %d numbers each line, row, angle of %d should produce a sum of %d: ",PN,N,SN);
//      readline(s);
        stot(s, t);
	    ttosquare(t, square, N, N);
	    result = issquare(square, N, SUM);
		printf("result is %d\n", result);
	    print_t(t);
        print_square(square);
}

int issquare(int square[][], int lim, int sum)
{
	int result;
	result = chklines(square, lim, sum);
}

int chklines(int square[][], int lim, int sum)
{
	int i, j;
	for (i = 0;i < lim;i++)
		if (checksum(&square[i][0]) != sum)
			return 0;
		else
			return 1;
}

int isline(int line[], int lim)
{
	int n = 0, i;
	for (i = 0;line[i] < lim;i++)
		n += line[i];
	return n;
}

int checksum(int *s)
{
        int n = 0;
        while(*s++ != '\0')
                n += *s;
        return n;
}

void print_square (int square[][N])
{
        int i, j;
        for (i = 0;i < N;i++){
                printf("\n");
                for (j=0;j < N;j++)
                        printf("\t%d\t", square[i][j]);
		}
        printf("\n");
}

void ttosquare(int *t, int square[][N], int lim1, int lim2)
{
        int i, j;
        for (i = 0;i < lim1;i++)
                for (j = 0;j < lim2;j++)
                        square[i][j] = *t++;
}

void print_error(int *t)
{
        printf("the line ");
        while(*t != '\0')
                printf("%d ", *t++);
        printf("has an error\n");
}

void readline(char *s)
{
        char c;
        while((c=getchar()) != EOF && c != '\n')
                *s++ = c;
}

void print_t(int *t)
{
        while(*t++ != '\0')
                printf("%d\n", *t);
        printf("\n");
}

void stot (char *s, int *t)
{
        int k, n, i=0;
        int slength = strlen(s);
        for(k=0;k < slength;) {
                for(i=k;isspace(s[i]);i++)
                        ;
                for(n=0;isdigit(s[i]);i++)
                        n = 10 * n + (s[i] - '0');
                *t++ = n;
                k=i;
        }
        *t = '\0';
}