c语言参考资料

P83 4 include int main char c1 c2 c1 97 c2 98 printf c1 c c2 c n c1 c2 printf c1 d c2 d n c1 c2 return 0 P83n5 include int main int a b float x y char c1 c2 scanf a db d scanf f e scanf c c printf a d b d x f y f c1 c c2 c n a b x y c1 c2 return 0 P83n7 include int main double r h l s sq vq vz float m 3 1415926 scanf lf lf l 2 r m s r r m sq 4 r r m vq 4 3 r r r m vz s h printf l 5 2f n l printf s 5 2f n s printf sq 5 2f n sq printf vq 5 2f n vq printf vz 5 2f n vz return 0 P112n5 include include int main float a b printf 请输入一个整数 a scanf f if a 1000 a 0 printf 请输入不大于 1000 的整数 n scanf f else b sqrt a printf a 0f b 0f n a b return 0 P112n6 include include int main int x y printf 请输入 x 的值 x scanf d d if x 10 y 3 x 11 else y 2 x 1 printf y d y return 0 P112n8 include include int main int x char grade printf 请输入你的成绩 scanf d x grade 10 switch x case 0 case 1 case 2 case 3 case 4 case 5 printf 您的等级为 E break case 6 printf 您的等级为 D break case 7 printf 您的等级为 C break case 8 printf 您的等级为 B break case 9 case 10 printf 您的等级为 A break return 0 P140n3 include include int main int m n r s printf 输入两数 scanf d d s m n while n 0 r m n m n n r printf 最大公约数 d n m printf 最小公倍数 d n s m return 0 P140n6 include include int main int a b n sum sum 0 for n 1 n 20 n for a 1 b 1 a n a b b a sum sum b printf d sum return 0 P140n7 include include int main int a b c sumA sumB float sumC sum for a 1 sumA 0 a 100 a sumA sumA a for b 1 sumB 0 b 50 b sumB sumB b b for c 1 sumC 0 c 10 c sumC sumC 1 c sum sumA sumB sumC printf 0f sum return 0 P168n4 include include int main int a 6 1 3 6 7 9 int i j x t printf 输入一个数字 scanf d for i 0 i 5 i if xi j a j a j 1 a j x printf 插入的数组为 n for i 0 i 6 i printf 4d a i printf n return 0 P168n5 include main int a 5 i b t printf 请输入一个数组 n for i 0 i 5 i scanf d for b 0 b 4 b for i 0 ia i 1 t a i a i a i 1 a i 1 t printf 排好序的数组为 n for i 0 i 5 i printf d a i P168n6 include int main int a 10 10 int i j for i 0 i 10 i a i 0 1 a i i 1 for i 2 i 10 i for j 1 j i j a i j a i 1 j 1 a i 1 j for i 0 i 10 i for j 0 j i j printf d a i j printf n return 0 P218n1 include int main int a b m n t int max int int printf 请输入两个数 scanf d d if a b t a a b b t m max a b n a b m printf 最大公约数是 d n m printf 最小公倍数是 d n n int max int x int y int z while x y 0 z x y x y y z return y P218n2 include include void deltaZero double a double b double c double ans b 2 a printf x1 x2 lf n ans void deltaLargerZero double a double b double c double ans1 ans2 d d b b 4 a c ans1 b sqrt d 2 a ans2 b sqrt d 2 a printf x1 lf x2 lf n ans1 ans2 void deltaLessZero double a double b double c double real imar d d b b 4 a c real b 2 a imar sqrt d 2 a printf x1 lf lfi x2 lf lfi n real imar real imar void main double a b c x double d printf please input a b c scanf lf lf lf d b b 4 a c if d 0 deltaZero a b c else if d 0 deltaLargerZero a b c else if d 0 deltaLessZero a b c P218n3 include main int a b printf 输入一个数 n scanf d b isprime a if b 0 printf 不是素数 n else printf 是素数 n int isprime int c int d e i d sqrt c for i 2 i d 1 e 1 else e 0 return e P218n4 include void exchange int a 3 3 int i j 1 t for i 0 i 2 i for j 1 j 3 j t a i j a i j a j i a j i t void main int i j a 3 3 printf enter nine number n for i 0 i 3 i for j 0 j 3 j scanf d printf 2d a i j exchange a printf the number is n for i 0 i 3 i for j 0 j 3 j printf 2d a i j printf n P218n5 include include void main void yuan char a 100 char a 100 printf please input string n gets a printf revert is n yuan a void yuan char a 100 char d 100 char f int i j k i strlen a for j 0 k i 1 j i j k d k a j for j 0 j i j printf c d j P218n6 void main char s1 80 s2 80 int i 0 j 0 puts input two strings gets s1 gets s2 while s1 i 0 i