C语言程序设计试题集97684- 副本(2)

printf(\ }

5. #include int main() { int a,b,c,m; printf(\ scanf(\ if(a<=b) m=a; else m=b; if(c

输入：21 22 23<回车> 6. #include int main() { char ch1='a',ch2='B',ch3='E'; if(ch1>ch2) if(ch2>ch3) ch3++; else --ch3; printf(\ return 0; }

7. #include int main() { float x,y; scanf(\ switch((int)x/10) { case 0: y=1.0; printf(\ case 1: y=2*x+1; printf(\ case 2: y=3*x*x+2; printf(\ default: printf(\}

return 0; } 输入：15.3<回车> 8. #include int main()

{

char ch1='A',ch2='B'; switch(ch1) { case 'A': switch(ch2) { case 'B': printf(\ case 'A': printf(\ } case 'B': printf(\ } return 0; }

9. #include void main() { float score; score = 100; if (score<60) printf(\ else switch( ( int ) score / 10 ) { case 10:

case 9: printf(\

case 8: printf(\ case 7: printf(\ break; case 6: printf(\ break; default: printf(\ } }

10. #include void main() {

int i=0，a=2； if(i==0) printf(“**”)； else

printf(“$$”)； printf(“*”)； }

11. #include void main() { int m=10,n=0,p=4,q=20; if (n) q=15-m;

if (m)

else q=25+m; else if (p) q=q+p; printf(“q=%d\\n”,q); }

12. #include void main() { int a=1,b=0; switch(a) { case 1: switch (b) { case 0: printf(\ case 1:printf(\ } case 2: printf(\ } }

13. #include int main( ) { int a=2,b=7,c=5; switch (a>0){ case 1: switch (b<0){ case 1: printf(\ case 2: printf(\ } case 0: switch (c==5){ case 1: printf(\ default : printf(\ } default : printf(\ } printf(\ return 0; }

14. #include int main() { int a=0,b=1,c=0,d=20; if(a) d=d-10; else if (!b) if(!c) d=15; else d=25; printf(\ return 0; } 15. #include

int main() { int a=1; switch(a){ case 0: printf(\ case 1:printf(\ case 2:printf(\ } return 0; } 16. #include int main() { int x, y; scanf(\ y = x>12 ? x + 10 : x - 12; printf(\ return 0; } 输入：12<回车> 17. #include int main() { float x, y; char op; double r; scanf(\ switch(op) { case '+': r = x + y; break; case '-': r = x - y; break; case '*': r = x * y; break; case '/': r = x / y; break; } printf(\ return 0; } 输入：3.5<回车> 18. #include \ void main( ) { int a=7; if(a>9 || a<10) a=a/3; a=a%3; printf(\}

19. #include void main() { int a=20; switch(a%3) { case 0: printf(\ case 1: printf(\ case 2: printf(\ default: printf(\

else } printf(\ }

20. #include void main() { int a=2,b=5,c=8,t; if ( a < b ) { t = a; a = b; b = t; } if ( b < c ) { t = b; b = c; c = t; } if ( a < b ) { t = a; a = b; b = t; } printf( \ }

三.补充程序

1. 根据输入字符的ASCII码来判别字符的类别。由ASCII码表可知ASCII值小于32的为控制字符。 在“0”和“9”之间的为数字，在“A”和“Z”之间为大写字母， 在“a”和“z”之间为小写字母，其余则为其它字符。 #include\ #include\ int main() { char c; printf(\ ___________ c=getchar();________________________________ if(c<32) printf(\ _____________(c>='0'&&c<='9')________________________________ printf(\ else if _____________(c>='A'&&c<='Z')__________________________ printf(\ else if(c>='a'&&c<='z') printf(\ _______________ _____________________________ printf(\ return 0; } 2. 计算器程序。用户输入运算数和四则运算符， 输出计算结果. #include\ int main() { float a,b; ____________________________________________; printf(\ scanf(\ switch(c) { case '+': printf(\

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