c语言现代第2版 第一章
第一章
#include <stdio.h> int main(void) { printf("hello, world\n"); return 0; }
#include <stdio.h> int main(void) { printf("parkinson's law:\nwork expand so as to "); printf("fill the time \n"); printf("available for its completion.\n"); return 0; }
#include <stdio.h> int main(void) { int volume; int height = 8, lenght = 12, width = 10; volume = height * lenght * width; printf("volume:%d\n", volume); printf("dimens: %dx%dx%d\n", lenght, width, height); printf("dimensional weight:%d\n", (volume + 165) / 166); return 0; }
#include <stdio.h> int main(void) { int height, lenght, width; printf("the sum is %d %d %d\n", lenght, width, height); return 0; }
a 不合法
b 合法
c 合法
d 合法
不知道。
for if while 是
main printf 不是
14个记号
answer = (3 * q - p * q) / 3;
空
#include <stdio.h> int main(void) { printf(" *\n"); printf(" *\n"); printf(" *\n"); printf("* *\n"); printf(" * *\n"); printf(" * \n"); return 0; }
#include <stdio.h> #define PI 3.14f int main(void) { float v; int r; r = 10; v = (4.0f / 3.0f) * PI * r * r * r; printf("the sum is %f\n", v); return 0; }
#include <stdio.h> int main(void) { int num; float sum; printf("Enter a num:"); scanf("%d", &num); sum = (1+0.05) * num; printf("with tax added: $%.2f\n", sum); return 0; }
#include <stdio.h> int main(void) { int x, y; printf("Enter a num:"); scanf("%d", &x); y = 3 * x * x * x * x * x + 2 * x * x * x * x - 5 * x * x * x - x * x + 7 * x - 6; printf("the sum is %d", y); return 0; }
#include <stdio.h> int main(void) { int x, y; printf("Enter a num:"); scanf("%d", &x); y = ((((3 * x+2)*x-5)*x-1)*x+7)*x-6; printf("the sum is %d\n", y); return 0; }
#include <stdio.h> int main(void) { int num, num20, num10, num5, num1; printf("Enter a num:"); scanf("%d", &num); num20 = num / 20; num10 = (num - num20 * 20) / 10; num5 = (num - num20 * 20 - num10 * 10) / 10; num1 = num - num20 * 20 - num10 * 10 - num5 * 5; printf("$20 bills is %d:\n", num20); printf("$10 bills is %d\n", num10); printf("$5 bills is %d\n", num5); printf("$1 bills is %d\n", num1); return 0; }
#include <stdio.h> #define mon_rate (1+ rate * 0.01 / 12) int main(void) { float sum, rate, pay; float fir_remain, sec_remain, thr_remain; printf("Enter the sum:"); scanf("%f", &sum); printf("Enter rate:"); scanf("%f", &rate); printf("Enter pay:"); scanf("%f", &pay); printf("\n\n"); fir_remain = mon_rate * sum - pay; sec_remain = fir_remain * mon_rate - pay; thr_remain = sec_remain * mon_rate - pay; printf("the fir_remain is %.2f\n", fir_remain); printf("the sec_remain is %.2f\n", sec_remain); printf("the thr_remain is %.2f\n", thr_remain); return 0; }