awk用for循环打印三角形,直角,空心直角,等腰,等腰空心

直角三角形 awk -f 'as11'

cat as11

BEGIN {
        for(i=1;i<=10;i++) {
                for(j=1;j<=i;j++) {
                        printf "*"
                }
                printf "\n"
        }
}

 

直角空心三角形 awk -f 'as12'

cat as12

BEGIN {
        for(i=1;i<=10;i++) {
                for(j=1;j<=i;j++) {
                        if(j==1 || j==i || i==10)
                                printf "*";
                        else
                                printf " ";
                }
                printf "\n";
        }
}

 

 

等腰三角形 awk -f 'as13'

cat as13

BEGIN {
        for(i=1;i<=10;i++) {
                for(j=1;j<=10-i;j++) {
                        printf " ";
                }
                for(j=1;j<=(2*i-1);j++) {
                        printf "*";
                }
                printf "\n";
        }
}

 

等腰空心三角形 awk -f 'as14'

cat as14

BEGIN {
        for(i=1;i<=10;i++) {
                for(j=1;j<=10-i;j++) {
                        printf " ";
                }
                for(j=1;j<=(2*i-1);j++) {
                        if (j==1 || j==(2*i-1) || i==10)
                                printf "*";
                        else
                                printf " "
                }
                printf "\n";
        }
}