《c程序设计》练习题——程序设计题答案

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1、三、程序设计题题目一、参考答案：#includePRINT(inta,intb){FILE*out;if((out=fopen("result.txt","w+"))!=NULL)fprintf(out,"a=%d,b=%d",a,b);fclose(out);}voidmain(){inta,b;for(a=1;a<40;a++){for(b=1;b<40;b++)if(a*a+b==1053&&b*b+a==873){break;}if(b<40)break;printf(“%d,%d”,a,b);PRINT(a,b);}题目二、参考

2、答案：#includePRINT(intn){FILE*out;if((out=fopen("result.txt","w+"))!=NULL)fprintf(out,"n=%d",n);fclose(out);}voidmain(){intn;n=1;while(1){if(n%2==1&&n%3==2&&n%4==3&&n%5==4&&n%7==5)break;n++;}printf("n=%d",n);PRINT(n);}题目三、参考答案：#include#includePRINT(intn){

3、FILE*out;if((out=fopen("result.txt","w+"))!=NULL)fprintf(out,"n=%d",n);fclose(out);}voidmain(){intn,i;n=2;while(1){for(i=2;i<=sqrt(n);i++){if(n%i==0)break;}if(i>sqrt(s)&&(n+1000)%43==0)break;}printf("n=%d",n);PRINT(n);}题目四、参考答案：#includePRINT(inta,intb){FILE*out;if((out=

4、fopen("result.txt","w+"))!=NULL)fprintf(out,"a=%d,b=%d",a,b);fclose(out);}voidmain(){inta,b;for(a=1;a<100;a++){b=a-20;if(a*a+b*b==12368)break;}printf(“%d,%d”,a,b);PRINT(a,b);}题目五：参考答案：#includePRINT(ints){FILE*out;if((out=fopen("result.txt","w+"))!=NULL)fprintf(out,"%d",s)

5、;fclose(out);}voidmain(){inti,x,s=0;for(x=100;x<=300;x++){for(i=2;i<=sqrt(x);i++){if(x%i==0)break;}if(i>sqrt(s))s+=x;}printf("%d",s);PRINT(s);}题目六：参考答案：#includePRINT(ints){FILE*out;if((out=fopen("result.txt","w+"))!=NULL)fprintf(out,"%d",s);fclose(out);}voidmain(){inti,

6、x,s=0,count=0;for(x=201;;x++){for(i=2;i<=sqrt(x);i++){if(x%i==0)break;}if(i>sqrt(s)){s+=x;count++;}if(count==10)break;}printf("%d",s);PRINT(s);}题目七：参考答案：#includePRINT(ints){FILE*out;if((out=fopen("result.txt","w+"))!=NULL)fprintf(out,"%d",s);fclose(out);}voidmain(){inti

7、,j,k,x,s=0;for(x=100;x<1000;x++){i=x%10;j=x/10%10;k=x/100;if(i*i*i+j*j*j+k*k*k==x)s=s+x;}printf("%d",s);PRINT(s);}题目八：参考答案：#includePRINT(ints){FILE*out;if((out=fopen("result.txt","w+"))!=NULL)fprintf(out,"%d",s);fclose(out);}voidmain(){intx,y,s=0;for(x=1;x<500;x++){y=x*

8、x;if(y%10==x

9、

10、y%100==x

11、

12、y%1000==x