Redis-基礎型別與命令
阿新 • • 發佈:2020-12-02
任務一
#include<math.h> #include<stdio.h> void solve(double a, double b, double c); int main() { double a, b, c; printf("Enter a,b,c:"); while (scanf("%lf%lf%lf", &a, &b, &c) != EOF) { solve(a, b, c); printf("Enter a,b,c:"); } return 0; } voidsolve(double a, double b, double c) { double x1, x2; double delta, real, imag; if (a == 0) printf("not quadratic equation.\n"); else { delta = b * b - 4 * a * c; if (delta >= 0) { x1 = (-b + sqrt(delta)) / (2 * a); x2 = (-b - sqrt(delta)) / (2* a); printf("x1=%f,x2=%f\n", x1, x2); } else { real = -b / (2 * a); imag = sqrt(-delta) / (2 * a); printf("x1=%f+%fi ,x2=%f-%fi\n", real, imag, real, imag); } } }
任務2
#include<stdio.h> long long fac(int c); int main() {int i, n; printf("Enter n:"); scanf("%d", &n); for (i = 1; i <= n; ++i) printf("%d!=%lld\n", i, fac(i)); return 0; } long long fac(int n) { static long long p = 1; printf("p=%lld\n", p); p = p * n; return p; }
#include<stdio.h> int func(int, int); int main() { int k = 4, m = 1, p1, p2; p1 = func(k, m); p2 = func(k, m); printf("%d,%d\n", p1, p2); return 0; } int func(int a, int b) { static int m = 0, i = 2; i += m + 1; m = i + a + b; return(m); }
任務3
#include<stdio.h> #define N 1000 int fun(int n, int m, int bb[N]) { int i, j, k = 0, flag; for (j = n; j <= m; j++) { if(m>n&&n>=2) for(i=2;j<=m;i++) if (j% i == 0) { flag = 0; break; } if (i >= j) bb[k++] = j; } return k; } int main() { int n = 0, m = 0, i, k, bb[N]; scanf("%d", &n); scanf("%d", &m); for (i = 0; i < m - n; i++) bb[i] = 0; k = fun(n, m, bb); for (i = 0; i < k; i++) printf("%4d", bb[i]); return 0; }
任務4
#include<stdio.h> long long fun(int n); int main() { int n; long long f; while (scanf("%d", &n) != EOF) { f = fun(n); printf("n=%d,f=%lld\n", n, f); } return 0; } long long fun(int n) { long long int x; if (n == 1) x = 1; else x = fun(n - 1) * 2 + 1; return x; }
任務5
#include<stdio.h> void draw(int n, char symbol); #include<stdio.h> int main(){ int n; char symbol; while (scanf("%d %c", &n, &symbol) != EOF) { draw(n, symbol); printf("\n"); } return 0; } void draw(int n, char symbol) { int i, a, b, c, d; a = n; for (i = 1; i <= n; i++) { d = 2 * i - 1; for (b = 1; b <= (a - i); b++) { printf(""); } for (c = 1; c <= d; c++) { printf("%c", symbol); } printf("\n"); } }