0x80000003 运行带有函数的程序时出错

float average1;
cout << "Welcome to the weighted average calulator.nPlease enter your first grade:";
cin >> average1;
float weight1;
cout << "Enter the weight (not the weight acheived):";
cin >> weight1;
float grade2;
cout << "Enter the second grade:";
cin >> grade2;
float weight2;
cout << "Enter the weight of the second grade:";
cin >> weight2;
float grade3;
cout <<  "Enter your third grade:";
cin >> grade3;
float weight3;
cout << "The weight of it?:";
cin >> weight3;
float grade4;
cout << "You know what to do...:";
cin >> grade4;
float weight4;
cout << "Bet you're getting tired of this:";
cin >> weight4;
float grade5;
cout << "Enter the grade...:";
cin >> grade5;
float weight5;
cout << "If you don't know what to do now, you're stupid:";
cin >> weight5;
float grade6;
cout << "Grade please...:";
cin >> grade6;
float weight6;
cout << "Being a teacher can be annoying right, all these weights and grades. (Enter the weight):";
cin >> weight6;
float grade7;
cout << "Unless you're a student who's trying to figure out his grades. Trust me it can'be that bad. (Grade please, the 7th one):";
cin >> grade7;
float weight7;
cout << "Just keep working hard... Weight please:";
cin >> weight7;
float grade8;
cout << "Enter the 8th grade:";
cin >> grade8;
float weight8;
cout << "The weight of said grade?:";
cin >> weight8;
float grade9;
cout << "What's the 9th grade:";
cin >> grade9;
float weight9;
cout << "The weight of the 9th grade?:";
cin >> weight9;
float grade10;
cout << "The tenth grade? Enter it now:";
cin >> grade10;
float weight10;
cout << "Enter the weight of the tenth grade:";
cin >> weight10;
float grade11;
cout << "The 11th grade:";
cin >> grade11;
float weight11;
cout << "The weight of the 11th grade:";
cin >> weight11;
float grade12;
cout << "The 12th grade:";
cin >> grade12;
float weight12;
cout << "The weight of that  grade:";
cin >> weight12;
float grade13;
cout << "This is getting boring isn't it? The 13th grade please:";
cin >> grade13;
float weight13;
cout << "Just keep going I guess, The weight of the 13th grade please?";
cin >> weight13;
float grade14;
cout << "The 14th grade is?:";
cin >> grade14;
float weight14;
cout << "The weight of the 14th grade?:";
cin >> weight14;
float check;
check = weight1 + weight2 + weight3 + weight4 + weight5 + weight6 + weight7 + 
        weight8 + weight9 + weight10 + weight11 + weight12 + weight13 + weight14;

float under;
under = check;
float increase;
increase = 100 / under;

float averagedecimal1;
averagedecimal1 = average1 / 100;
float averagedecimal2;
averagedecimal2 = grade2 / 100;
float weightdecimal1;
weightdecimal1 = weight1 / 100;
float weightdecimal2;
weightdecimal2 = weight2 / 100;
float weighted1;
weighted1 = averagedecimal1 * weightdecimal1;
float weighted2;
weighted2 = averagedecimal2 * weightdecimal2;

float gradedecimal3;
gradedecimal3 = grade3 / 100;
float weightdecimal3;
weightdecimal3 = weight3 / 100;
float weighted3;
weighted3 = gradedecimal3 * weightdecimal3;

float gradedecimal4;
gradedecimal4 = grade4 / 100;
float weightdecimal4;
weightdecimal4 = weight4 / 100;
float weighted4;
weighted4 = gradedecimal4 * weightdecimal4;
float gradedecimal5;
gradedecimal5 = grade5 / 100;
float weightdecimal5;
weightdecimal5 = weight5 / 100;
float weighted5;
weighted5 = gradedecimal5 * weightdecimal5;
    float gradedecimal6;
    gradedecimal6 = grade6 / 100;
    float weightdecimal6;
    weightdecimal6 = weight6 / 100;
    float weighted6;
    weighted6 = gradedecimal6 * weightdecimal6;
    float gradedecimal7;
    gradedecimal7 = grade7 / 100;
    float weightdecimal7;
    weightdecimal7 = weight7 / 100;
    float weighted7;
    weighted7 = gradedecimal7 * weightdecimal7;
    float gradedecimal8;
    gradedecimal8 = grade8 / 100;
    float weightdecimal8;
    weightdecimal8 = weight8 / 100;
    float weighted8;
    weighted8 = gradedecimal8 * weightdecimal8;
    float gradedecimal9;
    gradedecimal9 = grade9 / 100;
    float weightdecimal9;
    weightdecimal9 = weight9 / 100;
    float weighted9;
    weighted9 = gradedecimal9 * weightdecimal9;
    float gradedecimal10;
    gradedecimal10 = grade10 / 100;
    float weightdecimal10;
    weightdecimal10 = weight10 / 100;
    float weighted10;
    weighted10 = gradedecimal10 * weightdecimal10;
    float gradedecimal11;
    gradedecimal11 = grade11 / 100;
    float weightdecimal11;
    weightdecimal11 = weight11 / 100;
    float weighted11;
    weighted11 = gradedecimal11 * weightdecimal11;
    float gradedecimal12;
    gradedecimal12 = grade12 /100;
    float weightdecimal12;
    weightdecimal12 = weight12 / 100;
    float weighted12;
    weighted12 = gradedecimal12 * weightdecimal12;
    float gradedecimal13;
    gradedecimal13 = grade13 / 100;
    float weightdecimal13;
    weightdecimal13 = weight13 / 100;
    float weighted13;
    weighted13 = gradedecimal13 * weightdecimal13;
    float gradedecimal14;
    gradedecimal14 = grade14 / 100;
    float weightdecimal14;
    weightdecimal14 = weight14 / 100;
    float weighted14;
    weighted14 = gradedecimal14 * weightdecimal14;

float weightedscore13;
weightedscore13 = weighted1 + weighted2 + weighted3 + weighted4 + weighted5 + 
                  weighted6 + weighted7 + weighted8 + weighted9 + weighted10 + 
                  weighted11 + weighted12 + weighted13 + weighted14;
    float last13;
    last13 = weightedscore13 * 100;
    float corrected;
    corrected = last13 * increase;
     cout << "Your weighted average is:";
cout << corrected;
cout << "%" <<endl;
cin.ignore();
cin.get();
return 0;

每次我运行这个程序时，在进入 1 年级、2 年级和有时是 3 年级时，程序都会崩溃，并显示错误0x80000003指示内存损坏。我还没有找到解决方案。感谢所有帮助。