c语言练习题二

3 ¥¦;w§TUVWXc=¨(©ª¢£\r«¬­®¥¦w§)239\r¯°w§±²‰;=¨Œ239;¯°?=€³bV{| stud 7i\r1 .+,?@1\r2 .+,CDE1\rSinclude "stdio. h \rstruct student\r{ char num[6];\rchar name [8];\rint score [3];\rfloat avr;\r} stu[5];\rmain ()\r{int i, j, sum;\rFILE *fp;\r/*input*/\rfor(i=0;i<5;i++)\r{ printf (z/\n please input No. %d score:\nz/, i);\rprintf ("stuNo: )#\rscanf ( %s stu[i]. num);\rprintf("name: )#\rscanf( %s stu[i]. name);\rsum=0;\rfor(j=0;j<3;j++)\r{ printf (zscore %d. j+1);\rscanf ( %d , &stu[i]. score[j]);\rsum+=stu[i]. score[j];\r)\rstu[i]. avr=sum/3. 0;\r)\rfp=fopen( stud  w );\rfor (i=0;i<5;i++)\rif(fwrite(&stu[i], sizeof(struct student), 1, fp)!=1).\rprin tf (z'f i l e w rite error\n/) ;\rf close(f p);\r}