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步骤1
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#include <stdio.h>
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int main( )
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{
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int num_spaces =30;
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printf("%*s1.Input\n",num_spaces," ");
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printf("%*s2.Output\n",num_spaces," ");
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printf("%*s3.Order\n",num_spaces," ");
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printf("%*s4.Quit\n",num_spaces," ");
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char a;
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again:a=getchar();
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switch(a)
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{
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case'i':printf("You are trying to Input info");break;
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case'o':printf("You are trying to Output info");break;
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case'm':printf("You are trying to Make things orderd");break;
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case'q':printf("You are about to Quit");break;
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case'\n':printf("\n");break;
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default:printf("Wrong input");
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}
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goto again;
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}
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步骤2
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#include <stdio.h>
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int main( )
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{ struct Student
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{
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int xh;
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float gs;
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float dw;
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float yy;
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float zcj;
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} student1,student2,student3;
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scanf("%d%f%f%f",&student1.xh,&student1.gs,&student1.dw,&student1.yy);
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scanf("%d%f%f%f",&student2.xh,&student2.gs,&student2.dw,&student2.yy);
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scanf("%d%f%f%f",&student3.xh,&student3.gs,&student3.dw,&student3.yy);
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student1.zcj=student1.gs+student1.dw+student1.yy;
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student2.zcj=student2.gs+student2.dw+student2.yy;
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student3.zcj=student3.gs+student3.dw+student3.yy;
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printf("学号 %d 高数成绩 %.1f 大学物理成绩 %.1f 英语成绩 %.1f 总成绩 %.1f\n",student1.xh,student1.gs,student1.dw,student1.yy,student1.zcj);
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printf("学号 %d 高数成绩 %.1f 大学物理成绩 %.1f 英语成绩 %.1f 总成绩 %.1f\n",student2.xh,student2.gs,student2.dw,student2.yy,student2.zcj);
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printf("学号 %d 高数成绩 %.1f 大学物理成绩 %.1f 英语成绩 %.1f 总成绩 %.1f\n",student3.xh,student3.gs,student3.dw,student3.yy,student3.zcj);
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}
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步骤3
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#include <stdio.h>
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int main( )
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{
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int num_spaces =30;
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printf("%*s1.Input\n",num_spaces," ");
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printf("%*s2.Output\n",num_spaces," ");
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printf("%*s3.Order\n",num_spaces," ");
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printf("%*s4.Quit\n",num_spaces," ");
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char a;
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again:a=getchar();
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switch(a)
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{
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case'i':printf("Please input info of the three students:");
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struct Student
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{
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int xh;
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float gs;
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float dw;
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float yy;
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float zcj;
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float pjf;
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} student1,student2,student3,studenttemp;
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scanf("%d%f%f%f",&student1.xh,&student1.gs,&student1.dw,&student1.yy);
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scanf("%d%f%f%f",&student2.xh,&student2.gs,&student2.dw,&student2.yy);
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scanf("%d%f%f%f",&student3.xh,&student3.gs,&student3.dw,&student3.yy);
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student1.zcj=student1.gs+student1.dw+student1.yy;
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student2.zcj=student2.gs+student2.dw+student2.yy;
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student3.zcj=student3.gs+student3.dw+student3.yy;
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student1.pjf=student1.zcj/3;
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student2.pjf=student2.zcj/3;
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student3.pjf=student3.zcj/3;
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if(student2.zcj>student3.zcj)
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{
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studenttemp = student2;
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student2 = student3;
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student3 = studenttemp;
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}
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if(student1.zcj>student3.zcj)
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{
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studenttemp = student1;
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student1 = student3;
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student3 = studenttemp;
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}
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if(student1.zcj>student2.zcj)
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{
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studenttemp = student1;
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student1 = student2;
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student2 = studenttemp;
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}
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printf("%d,%.1f,%.1f\n%d,%.1f,%.1f\n%d,%.1f,%.1f\n",student1.xh,student1.zcj,student1.pjf,student2.xh,student2.zcj,student2.pjf,student3.xh,student3.zcj,student3.pjf);
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break;
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case'o':printf("You are trying to Output info");break;
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case'm':printf("You are trying to Make things orderd");break;
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case'q':printf("You are about to Quit");break;
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case'\n':printf("\n");break;
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default:printf("Wrong input");
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}
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goto again;
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}
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