C语言源代码word(我自编yo.doc

1.1#include void main() printf (This is a C program.n); 1.2#include void main ( ) int a,b,sum; a=123; b=456; sum=a+b; printf (sum is %dn, sum); 1.3#include void main ( ) int max(int x,int y);int a, b, c; scanf (%d,%d,&a,&b); c=max (a,b); printf (max=%d,c);int max(int x,int y)int z; if (xy) z=x; else z=y; return (z); 2.20 #include main( ) int i,t; t=1; i=2; while(i=5) t=t*i; i=i+1; printf(%d,t); 2.21#include main( ) int sign=1; float deno=2, sum=1, term; while (deno=100) sign=-sign; term=sign/deno; sum=sum+term; deno=deno+1; printf(%f,sum); 3.1#define PRICE 30#include void main ( ) int num, total; num=10; total=num * PRICE; printf(total=%dn,total); 3.2 #include void main ( ) int a,b,c,d; unsigned u; a=12;b=-24;u=10; c=a+u;d=b+u; printf(a+u=%d,b+u=%dn,c,d); 3.3#include void main()int a,b; a=32767; b=a+1; printf(%d,%dn,a,b);3.4#include void main()float a,b; a = 123456.789e5; b = a + 20 ; printf(%fn,b); 3.5 #include void main ( ) printf( ab ct derftgn); printf(htibbj kn);3.6#include void main() char c1,c2; c1=97; c2=98; printf(%c %cn,c1,c2); printf(%d %dn,c1,c2); 3.7#include void main() char c1,c2; c1=a; c2=b;c1=c1-32;c2=c2-32; printf(%c %c,c1,c2); 3.7A#include void main() int i; char c; i=a; c=97; printf(%c,%dn,c,c); printf(%c,%dn,i,i); 3.8#include void main ( ) float x; int i; x=3.6; i=(int)x; printf(x=%f, i=%dn,x,i);3.9 #include void main ( ) unsigned a; int b=-1; a=b; printf(%un,a);4.1#include void main ( ) char a,b,c; a=B;b=O;c=Y; putchar(a);putchar(b);putchar(c); putchar (n); 4.1A#include void main ( ) char a,b,c; a=B;b=O;c=Y; putchar(a);putchar(n);putchar(b);putchar(n);putchar(c);putchar(n); 4.2 #include void main ( ) char c; c=getchar(); putchar(c);4.3#include void main() unsigned int a=65535; int b=-2; printf(a=%d,%o,%x,%un,a,a,a,a); printf(b=%d,%o,%x,%un,b,b,b,b); 4.4#include void main()char c=a; int i=97; printf(%c,%dn,c,c); printf(%c,%dn,i,i); 4.5 #include void main() float x,y; x=111111.111;y=222222.222; printf(%f,x+y); 4.6 #include void main ( ) printf(%3s,%7.2s,%.4s,%-5.3sn,CHINA,CHINA, CHINA, CHINA);#include void main() float x,y; x=111111.111;y=222222.222; printf(%f,x+y);4.7#include void main() double x,y;x=1111111111111.111111111; y=2222222222222.222222222;printf(%f,x+y);4.8#include void main ( )float f=123.456;printf(%f %10f %10.2f %.2f %-10.2fn,f,f,f,f,f);4.9 #include void main ( ) int a,b,c; scanf(%d%d%d,&a,&b,&c); printf(%d,%d,%dn,a,b,c);4.10#include #include void main() float a,b,c,s,area; scanf(%f,%f,%f,&a,&b,&c); s=1.0/2*(a+b+c); area=sqrt(s*(s-a)*(s-b)*(s-c); printf(a=%7.2f, b=%7.2f,c =%7.2f,s =%7.2fn,a,b,c,s); printf(area=%7.2fn,area); 4.11#include void main() char c1,c2; c1=getchar(); printf(%c,%dn,c1,c1); c2=c1+32; printf(%c,%dn,c2,c2);4.12#include #include void main ( ) float a,b,c,disc,x1,x2,p,q; scanf(a=%f,b=%f,c=%f,&a,&b,&c); disc=b*b-4*a*c; p=-b/(2*a);q=sqrt(disc)/(2*a); x1=p+q;x2=p-q; printf(nnx1=%5.2fnx2=%5.2fn,x1,x2);5.1 #include #include void main ( ) float a,b,c,disc,x1,x2,realpart,imagpart; scanf(%f,%f,%f,&a,&b,&c); printf(the equation ); if(fabs(a)=1e-6)printf(is not a quadraticn); else disc=b*b-4*a*c; if(fabs(disc)1e-6) x1=(-b+sqrt(disc)/(2*a);x2=(-b-sqrt(disc)/(2*a); printf(has distinct real roots:%8.4f and %8.4fn,x1,x2); else realpart=-b/(2*a); imagpart=sqrt(-disc)/(2*a); printf( has complex rootsn); printf(%8.4f+%8.4fin,realpart,imagpart); printf(%8.4f-%8.4fin,realpart,imagpart);5.2 #include void main ( ) float a,b,c,t; scanf(%f,%f,%f,&a,&b,&c); if(ab) t=a;a=b;b=t; if(ac) t=a;a=c;c=t; t=b;b=c;c=t; printf(%5.2f,%5.2f,%5.2fn,a,b,c); 5.3#include void main () int x,y; scanf(%d,&x); if (x=0)if (x0) y= 1;else y= 0; else y=-1; printf(x=%d,y=%dn,x,y); 5.3A #include void main ( ) char ch; scanf(%c,& ch); ch=(ch=A& ch=Z)?(ch+32):ch; printf(%cn,ch);5.4 #include void main ( ) char ch; scanf(%c,& ch); ch=(ch=A& ch=Z)?(ch+32):ch; printf(%cn,ch);5.5A#include void main() int year, leap; scanf(%d,&year); if(year%4!=0) leap=0; else if(year%100!=0) leap=1; else if(year%400!=0) leap=0; elseleap=1; if (leap)printf(%d is ,year); elseprintf(%d is not ,year); printf(a leap year.n);5.5B#include void main() int year, leap; scanf(%d,&year); if(year%4=0 & year%100!=0) | (year%400=0) leap=1;else leap=0; if (leap)printf(%d is ,year); elseprintf(%d is not ,year); printf(a leap year.n);5.5#include void main() int year, leap; scanf(%d,&year); if (year%4=0)if (year%100=0) if (year%400=0) leap=1; else leap=0; else leap=1; else leap=0; if (leap)printf(%d is ,year); elseprintf(%d is not ,year); printf(a leap year.n);5.6 #include #include void main ( ) float a,b,c,disc,x1,x2,realpart,imagpart; scanf(%f,%f,%f,&a,&b,&c); printf(the equation ); if(fabs(a)=1e-6)printf(is not a quadraticn); else disc=b*b-4*a*c; if(fabs(disc)1e-6) x1=(-b+sqrt(disc)/(2*a);x2=(-b-sqrt(disc)/(2*a); printf(has distinct real roots:%8.4f and %8.4fn,x1,x2); else realpart=-b/(2*a); imagpart=sqrt(-disc)/(2*a); printf( has complex rootsn); printf(%8.4f+%8.4fin,realpart,imagpart); printf(%8.4f-%8.4fin,realpart,imagpart);5.7#include void main ( ) int c,s;float p,w,d,f;scanf(%f,%f,%d,&p,&w,&s);if(s=3000) c=12;else c=s/250;switch(c) case 0:d=0;break; case 1:d=2;break; case 2: case 3:d=5;break； case 4: case 5: case 6: case 7:d=8;break; case 8: case 9: case 10: case 11:d=10;break; case 12:d=15;break; f=p*w*s*(1-d/100.0);printf(freight=%15.4fn,f);6.1#include void main( ) int i, sum=0;i=1;loop: if(i=100) sum=sum+i; i+; goto loop; printf(%dn,sum);6.2#include void main() int i,sum=0; i=1; while (i=100) sum=sum+i; i+; printf(%dn,sum); 6.3#include void main() int i,sum=0; i=1; do sum=sum+i; i+; while(i=100); printf(%dn,sum); 6.4 #include void main ( ) int sum=0,i; scanf(%d,&i); while (i=10) sum=sum+i; i+; printf(sum=%dn,sum); 6.4A #include void main( ) int sum=0,i; scanf(%d,&i); do sum=sum+i; i+; while (i=10); printf(sum=%dn,sum);6.5#include void main() int n; for (n=100;n=200;n+) if (n%3=0)continue; printf(%d ,n); 6.6#include #includevoid main()int s;float n,t,pi;t=1;pi=0;n=1.0;s=1;while(fabs(t)1e-6)pi=pi+t; n=n+2; s=-s; t=s/n;pi=pi*4;printf(pi=%10.6fn,pi);6.7#include void main() long int f1,f2; int i; f1=1;f2=1; for(i=1; i=20; i+) printf(%12ld %12ld ,f1,f2); if(i%2=0) printf(n); f1=f1+f2; f2=f2+f1; 6.8 #include #include void main() int m,i,k; scanf(%d,&m);k=sqrt(m); for (i=2;ik) printf(%d is a prime numbern,m); else printf(%d is not a prime numbern,m); 6.9# include # include void main() int m,k,i,n=0; for(m=101;m=200;m=m+2) k=sqrt(m); for (i=2;i=k+1)printf(%d ,m);n=n+1;if(n%10=0) printf(n); printf (n);6.10#include void main() char c; while(c=getchar()!=n) if(c=a & c=A & cZ & cz) c=c-26; printf(%c,c); 7.1#include void main() int i,a10; for (i=0; i=0; i-)printf(%d ,ai); printf(n); 7.2#include void main() int i; int f20=1,1; for(i=2;i20;i+) fi=fi-2+fi-1; for(i=0;i20;i+) if(i%5=0) printf(n); printf(%12d,fi); 7.3#include void main() int a10; int i,j,t; printf(input 10 numbers :n); for (i=0;i10;i+)scanf(%d,&ai); printf(n); for(j=0;j9;j+)for(i=0;iai+1) t=ai;ai=ai+1;ai+1=t; printf(the sorted numbers :n); for(i=0;i10;i+)printf(%d ,ai); printf(n);7.4#include void main() int a23=1,2,3,4,5,6; int b32,i,j; printf(array a:n); for (i=0;i=1;i+) for (j=0;j=2;j+) printf(%5d,aij); bji=aij; printf(n); printf(array b:n); for (i=0;i=2;i+) for(j=0;j=1;j+) printf(%5d,bij); printf(n); 7.5#include void main() int i,j,row=0,colum=0,max; int a34=1,2,3,4,9,8,7,6,-10,10,-5,2; max=a00; for (i=0;i=2;i+) for (j=0;jmax) max=aij; row=i; colum=j; printf(max=%d,row=%d,colum=%dn,max,row,colum); 7.6#include void main() char c10=I, ,a,m, ,a, ,b,o,y; int i; for(i=0;i10;i+)printf(%c,ci); printf(n); 7.8#include void main() char string81; int i,num=0,word=0; char c; gets(string); for (i=0;(c=stringi)!=0;i+) if(c= ) word=0; else if(word=0)word=1; num+; printf(There are %d words in the line.n,num);7.9#include#includevoid main ( )char string20;char str320;int i;for (i=0;i0) strcpy(string,str0);else strcpy(string,str1);if (strcmp(str2,string)0) strcpy(string,str2);printf(nthe largest string is:n%sn,string);8.1#include void main()void printstar(); void print_message(); printstar(); print_message(); printstar(); void printstar() printf(* * * * * * * * * * * * * * * *n);void print_message() printf( How do you do!n);#include void main()void printstar(); void print_message(); printstar(); print_message(); printstar(); void printstar() printf(* * * * * * * * * * * * * * * *n);void print_message() printf( How do you do!n);8.2#include void main() int max(int x,int y); int a,b,c; scanf(%d,%d,&a,&b); c=max(a,b); printf(max is %d,c);int max(int x,int y) int z; z=xy?x:y; return(z); 8.3#include void main() int max(float x,float y); float a,b; int c; scanf(%f,%f,&a,&b); c=max(a,b); printf(max is %dn,c); int max(float x,float y) float z; z=xy?x:y; return(z);8.4#include void main() int f(int a,int b); int i=2,p; p=f(i,+i); printf(%dn,p); int f(int a,int b) int c; if(ab) c=1; else if(a=b) c=0; else c=-1; return(c);8.5#include void main()float add(float x, float y); float a,b,c; scanf(%f,%f,&a,&b); c=add(a,b); printf(sum is %fn,c);float add(float x,float y) float z; z=x+y; return(z);8.6#include #include float f(float x) float y;y=(x-5.0)*x+16.0)*x-80.0;return(y); float xpoint(float x1,float x2)float y; y=(x1*f(x2)-x2*f(x1)/(f(x2)-f(x1); return(y);float root(float x1,float x2) float x,y,y1; y1=f(x1); do x=xpoint(x1,x2); y=f(x); if(y*y10) y1=y;x1=x;else x2=x; while(fabs(y)=0.0001); return(x); void main() float x1,x2,f1,f2,x;do printf(input x1,x2:n); scanf(%f,%f,&x1,&x2); f1=f(x1); f2=f(x2); while(f1*f2=0);x=root(x1,x2); printf(a root of equation is%8.4fn,x);8.7int age(int n) int c; if(n=1) c=10; else c=age(n-1)+2; return(c);#include void main() printf(%d,age(5); 8.8#include void main() float fac(int n); int n; float y; printf(input an integer number:); scanf(%d,&n); y=fac(n); printf(%d!=%10.0fn,n,y);float fac(int n) float f; if(n0) printf(n0,dataerror!); else if(n=0,n=1) f=1; else f=fac(n-1)*n; return(f); 8.9#include void main()void hanoi(int n,char one,char two,char three); int m; printf(input the number of diskes:); scanf(%d,&m); printf(The step to moveing %d diskes:n,m); hanoi(m,A,B,C); void hanoi(int n,char one,char two,char three) void move(char x,char y); if(n=1) move(one,three); else hanoi(n-1,one,three,two); move(one,three); hanoi(n-1,two,one,three); void move(char x,char y) printf(%c-%cn,x,y);8.10#include void main() int large(int x,int y); int a10,b10,i,n=0,m=0,k=0; printf(enter array a:n); for(i=0;i10;i+) scanf(%d,&ai); printf(n); printf(enter array b:n); for(i=0;i10;i+)scanf(%d,&bi); printf(n); for(i=0;ibi %d timesnai=bi %d timesnaik) printf(array a is larger than array bn); else if (ny)flag=1; else if(xy)flag=-1; else flag=0; return(flag);8.11#include void main()float average(float array10); float score10,aver; int i; printf(input 10 scores:n); for(i=0;i10;i+) scanf(%f,&scorei); printf(