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1、.#include #include #include int main()int a,b,d,e,n,z;float c=0,g;printf(Input student number(n30):n);scanf(%d,&n);long vn,f;float vcn;next:;int x1=0,x2=0,x3=0,x4=0,x5=0,x6=0;int z1=60,z2=69,z3=70,z4=79,z5=80,z6=89,z7=90,z8=99,z9=100;printf(Management for Students scoresn1.Input recordn2.Caculate to
2、tal and average score of coursen3.Sort in descending order by scoren4.Sort in ascending order by scoren5.Sort in ascending order by numbern6.Search by numbern7.Statistic analysisn8.List recordn0.ExitnPlease Input your choice:n);scanf(%d,&a);switch (a)case 1:printf(Input students ID and score:n);for
3、(b=0;bn;b+)scanf(%ld%f,&vb,&vcb);break;case 2:for (b=0;bn;b+)c=c+vcb;printf(sum=%.0f,aver=%.2fn,c,c/n);break;.word.zl.case 3:printf(Sort in descending order by score:n);for (d=0;dn;d+)for (e=d+1;en;e+)if (vcdvce)g=vcd;vcd=vce;vce=g;g=vd;vd=ve;ve=g;for (b=0;bn;b+)printf(%ldt%.0fn,vb,vcb);break;case 4
4、:printf(Sort in ascending order by score:n);for (d=0;dn;d+)for (e=d+1;evce)g=vcd;vcd=vce;vce=g;g=vd;vd=ve;ve=g;for (b=0;bn;b+)printf(%ldt%.0fn,vb,vcb);break;.word.zl.case 5:printf(Sort in ascending order by number:n);for (d=0;dn;d+)for (e=d+1;eve)g=vcd;vcd=vce;vce=g;g=vd;vd=ve;ve=g;for (b=0;bn;b+)pr
5、intf(%ldt%.0fn,vb,vcb);break;case 6:printf(Input the number you want to search:n);scanf(%ld,&f);z=0;for (b=0;bn;b+)if (vb=f)printf(%ldt%.0fn,vb,vcb);z=1;break;if (z=0)printf(Not found!n);break;case 7:for (b=0;bn;b+)if (vcb60).word.zl.x1+;else if (vcb70)x2+;else if (vcb80)x3+;else if (vcb90)x4+;else
6、if (vcb100)x5+;elsex6+;printf(60t%dt%.2f%n,x1,(float)x1/n*100);printf(%d-%dt%dt%.2f%n,z1,z2,x2,(float)x2/n*100);printf(%d-%dt%dt%.2f%n,z3,z4,x3,(float)x3/n*100);printf(%d-%dt%dt%.2f%n,z5,z6,x4,(float)x4/n*100);printf(%d-%dt%dt%.2f%n,z7,z8,x5,(float)x5/n*100);printf(%dt%dt%.2f%n,z9,x6,(float)x6/n*100);break;case 8:for (d=0;dn;d+)for (e=d+1;eve)g=vcd;vcd=vce;vce=g;g=vd;vd=ve;ve=g;for (b=0;bn;b+)printf(%ldt%.0fn,vb,vcb);break;case 0:printf(End of program!n);goto end;default:.word.zl.printf(Input error!n);goto next;end:;.word.zl.
