Lab6_ex4

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#include void main() { int count=0; float mark,sum=0,average=0; char name[10]; char grade; while(1) { printf("Please enter name :"); scanf("%s",&name); printf("Please enter test marks, -9999 to exit :"); scanf("%f",&mark); if (mark != -9999) { sum = sum + mark; count++; if (mark >= 80) { grade = 'A'; } else if (mark >= 70) { grade = 'B'; } else if (mark >= 60) { grade = 'C'; } else if (mark >= 50) { grade = 'D'; } else { grade = 'F'; } printf("Name\t Marks\t Grade\n"); printf("%s\t %.2f\t %c\n",name,mark,grade); } else { break; } } if (count != 0) { average = sum/count; printf("\n\n%d of student enter their test results.\n",count); printf("The average of their marks is %.2f\n",average); } else { } }

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