C program to swap two numbers in a single statement.
main()
{
int a=10,b=20;
c=(a+b)-(b=a);
printf("The numbers are :%d %d ",a,b);
getch();
}
12345 2345 345 45 5
12345 1234 123 12 1
1 2 3 4 5 6 7 8 9 10 36 37 38 39 40 41 42 43 44 11 35 64 65 66 67 68 69 70 45 12 34 63 84 85 86 87 88 71 46 13 33 62 83 96 97 98 89 72 47 14 32 61 82 95 100 99 90 73 48 15 31 60 81 94 93 92 91 74 49 16 30 59 80 79 78 77 76 75 50 17 29 58 57 56 55 54 53 52 51 18 28 27 26 25 24 23 22 21 20 19
int main() { int a[10][10]={0},i,j,low=0,top=9,n=1; for(i=0;i<5;i++,low++,top--) { for(j=low;j<=top;j++,n++) a[i][j]=n; for(j=low+1;j<=top;j++,n++) a[j][top]=n; for(j=top-1;j>=low;j--,n++) a[top][j]=n; for(j=top-1;j>low;j--,n++) a[j][low]=n; } printf("\t\t\t\tPerfect Square\n"); for(i=0;i<10;i++) { printf("\n\n\t"); for(j=0;j<10;j++) { printf("%6d",a[i][j]); delay(300); } } return 0; }
1
232
34543
4567654
567898765
main()
{
int n, c, d, num = 1, space;
scanf("%d",&n);
space = n - 1;
for ( d = 1 ; d <= n ; d++ )
{
num = d;
for ( c = 1 ; c <= space ; c++ )
printf(" ");
space--;
for ( c = 1 ; c <= d ; c++ )
{
printf("%d", num);
num++;
}
num--;
num--;
for ( c = 1 ; c < d ; c++)
{
printf("%d", num);
num--;
}
printf("\n");
}
return 0;
}