C 語言中列印左右箭頭模式的程式
程式描述
列印左右箭頭模式
演算法
接受要列印左右箭頭模式的行數。
Print Upper Part of the Arrow with Stars Patterns Print Inverted Right Triangle with Stars Patterns Print Bottom Part of the Arrow with Stars Patterns Print the Right Triangle with Stars Patterns
範例
/*Program to print the Left and right arrow pattern*/ #include<stdio.h> int main() { int r, c, rows; //Left Arrow Pattern int r1, c1, rows1; //Right Arrow Pattern clrscr(); printf("Enter number of rows to print the Left Arrow Pattern: "); scanf("%d", &rows); printf("
"); printf("The Left Arrow Pattern is:"); printf("
"); for(r=1; r<rows; r++){ for(c=1; c<=(rows-r); c++){ printf(" "); } for(c=r;c<=rows; c++){ printf("*"); } printf("
"); } for(r=1; r<=rows; r++){ for(c=1; c<r; c++){ printf(" "); } for(c=1; c<=r; c++){ printf("*"); } printf("
"); } printf("Enter number of rows to print the Right Arrow Pattern: "); scanf("%d", &rows1); printf("
"); printf("The Right Arrow Pattern is:"); printf("
"); for(r1=1; r1<rows1; r1++){ for(c1=1; c1<=(2*r1-2); c1++){ printf(" "); } for(c1=r1; c1<=rows1; c1++){ printf("*"); } printf("
"); } for(r1=1; r1<=rows1; r1++){ for(c1=1; c1<=(2*rows1 - 2*r1); c1++){ printf(" "); } for(c1=1; c1<=r1; c1++){ printf("*"); } printf("
"); } getch(); return 0; }
輸出
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