第一章C语言初步一、选择题1.C2.D3.D4.A5.D6.B7.B 8.B 9.C 10.A二、思考与应用题1．A．字符串常量B．字符串常量C．整型常量D．浮点型常量（double）2．A．long doubleB．long intC．floatD．字符型常量3．A．整型常量B．字符型常量C．字符串常量D．字符串常量4．FirstExample: 10,w is Yz is 5.125．int main(void){return 0;}6．#include<stdio.h>int main(void){print f("Hello World");return 0;}7．#include<stdio.h>int main(void){printf("We are to learn correct");printf("C language here");return 0;}/*main*/8．#include<stdio.h>int main(void){/*Local Definition*/int a;float b;char c;/*Statements*/printf("The end of the program."); return 0;}/*main*/9．#include<stdio.h>int main(void){/*Local Definition*/int a;float b;char c,d;/*Statements*/printf("The end of the program."); return 0;}/*main*/10．#include<stdio.h>int main(void){/*Local Definition*/int a;char b,c,d;float e,f;/*Statements*/printf("The end of the program."); return 0;}/*main*/11．A．char option;B．int sum=0;C．float produce=1;12．A．short code;B．float salesTax=.0825;C．double sum=0;13．#include<stdio.h>int main(void){float cost=172.53;printf("The sales total is: $ %6.2f\n",cost);printf("^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^");return 0;}14．#include<stdio.h>int main(void){printf("******\n");printf("******\n");printf("******\n");printf("******\n");return 0;}15．#include<stdio.h>int main(void){printf("*\n");printf("**\n");printf("***\n");printf("****\n");return 0;}16．#include<stdio.h>int main(void){int x1=1;int x2=10;int x3=100;int x4=1000;int x5=10000;printf("%d %d %d %d %d\n",x1,x2,x 3,x4,x5);printf("%f %f %f %f %f\n",x1,x2,x 3,x4,x5);return 0;}17．#include<stdio.h>int main(void){int x;printf("Please enter an integer:\n");scanf("%d",&x);printf("The number as a character:%c\n",x);printf("The number as a decimal:%d\n",x);printf("The number as a float:%f\n",x);return 0;}三、编程题1．#include<stdio.h>int main(void){int x1;int x2;int x3;printf("Please enter three numbers:");scanf("%d%d%d",&x1, &x2, &x3);printf("\nYour numbers forword:\n");printf("%8d\n%8d\n%8d\n",x1,x2,x3 );printf("Your numbers reversed:\n");printf("%8d\n%8d\n%8d\n",x3,x2,x1 );return 0;}2．#include<stdio.h>int main(void){int x1;int x2;int x3;int x4;int x5;int x6;int x7;int x8;int x9;int x10;printf("Please enter 10 numbers:\n");scanf("%d%d%d%d%d%d%d%d%d%d",&x1, &x2, &x3, &x4, &x5, &x6, &x7, &x8, &x9, &x10);printf("\nYour numbers are:\n");printf("%8d%8d\n",x1,x10);printf("%8d%8d\n",x2,x9);printf("%8d%8d\n",x3,x8);printf("%8d%8d\n",x4,x7);printf("%8d%8d\n",x5,x6);return 0;}3．#include<stdio.h>int main(void){int x1;int x2;int x3;int x4;int x5;int x6;int x7;int x8;int x9;printf("Input:\n");printf(" ");scanf("%d%d%d%d%d%d%d%d%d",&x1, &x2, &x3, &x4, &x5, &x6, &x7, &x8, &x9);printf("\nOutput\n");printf("%8d,%d,%d\n",x1,x2,x3);printf("%8d,%d,%d\n",x4,x5,x6);printf("%8d,%d,%d\n",x7,x8,x9);return 0;}第二章表达式与简单程序设计一、选择题1.A2.D3.C4.B5.B6.D7.B二、思考与应用题1．A．2 B．8 C．8 D．0 E．11 2．A．4，4B．4，4 C．4，4 D．2，3 E．4，53．A．12 B．-27 C．14 D．2 E．4 4．A．22.52 B．4.5 C．13.333333 D．0.882353 E．0.075．ABCEF6．A．5 B．2 C．4 D．1 E．7．A．5 B．2 C．4 D．-3 E．6 8．A．5 B．294 C．4 D．29 E．9 9． 50 50 100 2510．#include<stdio.h>int main(void){float x;float y;float p;float s;float total;printf("Please enter x and y:\n");scanf("%f%f",&x,&y);p=x*y;s=x+y;total=s*s+p*(s-x)*(p+y);printf("total=%f",total);return 0;}11．#include<stdio.h>int main(void){int x,y,z;printf("Please enter two integers:\n");scanf("%d%d",&x,&y);z=x*y;printf("%d*%d=%d",x,y,z);return 0;}12．#include<stdio.h>int main(void){float x;int y;printf("Please enter a floating point number:\n");scanf("%f",&x);y=(int)x%10;printf("%d",y);return 0;}13．#include<stdio.h>int main(void){float x;int y;printf("Please enter a floating point number:\n");scanf("%f",&x);y=(int)x/10%10;printf("%d",y);return 0;}14．#include<stdio.h>int main(void){float x;float y;float c;float s;p rintf("Please enter length and width:\n");s canf("%f%f",&x,&y);c=2*(x+y);s=x*y;p rintf("The circumference is %f\n",c);p rintf("The measure of area is %f",s);r eturn 0;}15．#include<stdio.h>int main(void){int a;f loat r;p rintf("Please enter an angle(integer):\n");s canf("%d",&a);r=a/57.295779;p rintf("%d°is %.5f radians",a,r);r eturn 0;}16．#include<stdio.h>int main(void){float c;float F;printf("Please enter centigrade:\n");scanf("%f",&c);F=32+(c*180.0/100.0);printf("Fahrenheit is %f ",F);return 0;}17．（1）double m,v,KinEn;KinEn=m*v*v/2;（2）double b,c,res;res=(b+c)/（2*b*c）;18．（1）#include<stdio.h>int main(void){int x=25;x=x+5;printf("%d\n",x);x=x+5;printf("%d\n",x);return 0;}（2）#include<stdio.h>int main(void){int x=10;x=x+2;printf("%d\n",x);x=x+2;printf("%d\n",x);return 0;}（3）#include<stdio.h>int main(void){int x=32;x=x*2;printf("%d\n",x);x=x*2;printf("%d\n",x);return 0;}三、编程题1．A．#include<stdio.h>int main(void){float x;float y;printf("Please enter an number(inch):\n");scanf("%f",&x);y=x/12;printf("%f inches is %f feet ",x,y);return 0;}B．#include<stdio.h>int main(void){float x;float y;printf("Please enter an number(inch):\n");scanf("%f",&x);y=x/36;printf("%f inches is %f yards ",x,y);return 0;}C．#include<stdio.h>int main(void){float x;float y;printf("Please enter an number(inch):\n");scanf("%f",&x);y=x*2.54;printf("%f inches is %f centimeters ",x,y);return 0;D．#include<stdio.h>int main(void){float x;float y;printf("Please enter an number(inch):\n");scanf("%f",&x);y=x/39.37;printf("%f inches is %f meters ",x,y);return 0;}2．#include<stdio.h>int main(void){int fib1;int fib2;int fib3;fib1=13+21;fib2=21+fib1;fib3=fib1+fib2;printf("%d,%d,%d",fib1,fib2,fib3);return 0;}3．#include<stdio.h>int main(void){int x;int b1;int b2;int b3;int b4;int b5;printf("Please enter an integer(0-32767):\n");scanf("%d",&x);b1=x%10;b2=x/10%10;b3=x/100%10;b4=x/1000%10;b5=x/10000%10;printf("%4d%4d%4d%4d%4d\n",b5,b4,b3,b2,b1);printf("%4d%4d%4d%4d%\n",b4,b3,b2,b1);printf("%4d%4d%4d\n",b3,b2,b1);printf("%4d%4d\n",b2,b1);printf("%4d",b1);return 0;}第三章分支程序设计一、选择题1.C2.D3.A4.B5.B6.A7.C8.C 9.A二、思考与应用题1．A．0 B．1 C．1 D．0 E．0 2．A．x>=y B．x<y C．x!=y D．x==y E．x>y3．A．0 B．1 C．1 D．1 E．0 4．x=4,y=3,z=25．x=4,y=1,z=26．x=4,y=2,z=27．x=4,y=1,z=28．x=0,y=0,z=19．x=2,y=0,z=210．x=0,y=0,z=111．x=0,y=0,z=112．x=-1,y=0,z=013．x=0,y=1,z=014．x=1,y=3,z=115．x=1,y=3,z=116．x=4,y=3,z=017．if(aChar=='E'){c++;printf("Value is E\n");}18．switch(ch){case ‘E’:case ‘e’:countE++;break;case ‘A’:case ‘a’:countA++;break;case ‘I’:case ‘i’:countI++;break;default:printf("Error-Not A,E,or I\a\n"); }三、编程题1．#include<stdio.h>main( ){int x,x1,x2,x3;char grade;printf("please enter three text scores(0-100):\n");scanf("%d%d%d",&x1,&x2,&x3);x=(x1+x2+x3)/3;if(x>=90)grade='A';else if(x>=70&&x<90)if(x3>90)grade='A';elsegrade='B';else if(x>=50&&x<70)if((x2+x3)/2>70)grade='C';elsegrade='D';else if(x<50)grade='F';printf("%c\n",grade);}2．#include<stdio.h>main( ){int year;printf("please enter a year:\n");scanf("%d",&year);if(year%4==0&&year%100!=0||year%400==0)printf("%d is a leap year!\n",year);elseprintf("%d is a non-leap year!\n",year);}3．#include<stdio.h>main( ){i ntyearNow,monthNow,dayNow,year,month,day,x;printf("Please enter the date today(month day year):\n");scanf("%d%d%d",&monthNow,&dayNow,&yearNow);printf("Please enter your birthday(month day year):\n");s canf("%d%d%d",&month,&day,&year);if(monthNow<month)x=yearNow-year-1;else if(monthNow==month)if(dayNow<day)x=yearNow-year-1;elsex=yearNow-year;elsex=yearNow-year;printf("You are %d years old!\n",x);}4．#include<stdio.h>#include<stdlib.h>#include<time.h>main( ){int number,Ynumber;srand(time(NULL));number=rand()%20+1;printf("I am thinking of a number between 1 and 20.\n");printf("Can you guess what it is?");scanf("%d",&Ynumber);if(Ynumber==number)printf("Congratulations!You did it.");else{if(Ynumber>number)printf("Your guess is high.Try again:");elseprintf("Your guess is low.Try again:");scanf("%d",&Ynumber);if(Ynumber==number)printf("Congratulations!You did it.");else{if(Ynumber>number)printf("Your guess is high.Try again:");elseprintf("Your guess is low.Try again:");scanf("%d",&Ynumber);if(Ynumber==number)printf("Congratulations!You did it.");else{if(Ynumber>number)printf("Your guess is high.Try again:");elseprintf("Your guess is low.Try again:");scanf("%d",&Ynumber);if(Ynumber==number)printf("Congratulations!You did it.");else{if(Ynumber>number)printf("Your guess is high.Try again:");elseprintf("Your guess is low.Try again:");scanf("%d",&Ynumber);if(Ynumber==number)printf("Congratulations!You did it.");else{printf("sorry.The number was %d.\n",number);printf("You should have gotten it by now.\n");printf("Better luck next time.");}}}}}}5．#include<stdio.h>main( ){int year,month,day,x=0,y,z;printf("Please enter your birthday:(year month day)\n");scanf("%d%d%d",&year,&month,&day);y=((year-1)*365+((year-1)/4)-((year-1)/100) +((year-1)/400))%7;switch(month){case 12:x=x+30;case 11:x=x+31;case 10:x=x+30;case 9:x=x+31;case 8:x=x+31;case 7:x=x+30;case 6:x=x+31;case 5:x=x+30;case 4:x=x+31;case 3:x=x+28;case 2:x=x+31;case 1:x=x+0;}if(year%4==0&&year%100!=0||year%400==0)day++;z=(x+day+y)%7;switch(z){case 0:printf("The day of your birthday is Sunday!");break;case 1:printf("The day of your birthday is Monday!");break;case 2:printf("The day of your birthday is Tuseday!");break;case 3:printf("The day of your birthday is Wednesday!");break;case 4:printf("The day of your birthday is Thursday!");break;case 5:printf("The day of your birthday is Friday!");break;case 6:printf("The day of your birthday is Saturday!");break;}}6．#include<stdio.h>#include<math.h>main( ){int a,b,c,p;float x1,x2;printf("Please enter a,b,c:\n");scanf("%d%d%d",&a,&b,&c);p=b*b-4*a*c;if(a==0)if(b==0)printf("There is no solution!");else{x1=-(float)c/b;printf("The solution is x1=%f",x1);}elseif(p<0)printf("There is no real solution!");else{x1=-b+sqrt(p)/(2*a);x2=-b-sqrt(p)/(2*a);printf("The solutions are x1=%f,x2=%f",x1,x2);}}。
