C语言指定行列打印字符 C语言混合数字和字符输入 C语言输入验证 C语言指定行列打印字符 /* showchar2.c -- prints characters in rows and columns */ #include <stdio.h> void display(char cr, int lines, int width); int main(void) { int ch; /* character to be printed */ int rows, cols; /* number of rows and columns */ printf("Enter a character and two integers:\n"); while ((ch = getchar()) != '\n') { if (scanf("%d %d",&rows, &cols) != 2) break; display(ch, rows, cols); while (getchar() != '\n') continue; printf("Enter another character and two integers;\n"); printf("Enter a newline to quit.\n"); } printf("Bye.\n"); return 0; } void display(char cr, int lines, int width) { int row, col; for (row = 1; row <= lines; row++) { for (col = 1; col <= width; col++) putchar(cr); putchar('\n'); /* end line and start a new one */ } } C语言混合数字和字符输入 C语言输入验证