#include int main() { int i,j,p,k,n=1; printf("#Pattern 1\n\n"); for(i=1;i<=5;i++) /* pattern1 */ { for(j=1;j<=i;j++) { printf("%d ",i); } printf("\n"); } printf("\n"); printf("#Reverse of pattern 1\n\n"); for(i=5;i>=1;i--) /*reverse of pattern 1*/ { for(j=1;j<=i;j++) { printf("%d ",i); } printf("\n"); } printf("\n"); printf("#Pattern 2\n\n"); for(i=1;i<=5;i++) /* pattern 2 */ { for(j=1;j<=i;j++) { printf("%d ",j); } printf("\n"); } printf("\n"); printf ("#Reverse of pattern 2\n\n"); for(i=5;i>=1;i--) /*Reverse of pattern 2*/ { p=i; for(j=1;j<=i;j++) { printf("%d ",p); p--; } printf("\n"); } printf("\n"); printf("#Pattern 3\n\n"); for(i=1;i<=5;i++) /* pattern 3 */ { k=0; for(j=1;j<=i;j++) { p=2*k+1; printf("%d ",p); k++; } printf("\n"); } printf("\n"); printf("#Reverse of pattern 3\n\n"); for(i=5;i>=1;i--)/*Reverse of pattern 3*/ { k=i-1; for(j=1;j<=i;j++) { p=2*k+1; printf("%d ",p); k--; } printf("\n"); } printf("\n"); printf ("#Pattern 4\n\n"); for(i=1;i<=5;i++) /* pattern 4 */ { for(j=1;j<=i;j++) { if(j%2==0) printf("1 "); else printf("0 "); } printf("\n"); } printf("\n"); printf("#Reverse of pattern 4\n\n"); for(i=5;i>=1;i--) /*Reverse of pattern 4*/ { for(j=1;j<=i;j++) { if(k%2==0) printf("1 "); else printf("0 "); k++; } printf("\n"); } return 0; }

Print the pattern:1