#include<stdlib.h>
#include<stdio.h>
#include<math.h>
void SubMain_f();
void SolveForX_f();
void MmToM_f();
void InchesToFeet_f();
void CelsiusToFahrenheit_f();
void Quadformula_f();
void SqRoot_f();
void CalcAdd_f();
void CalcSub_f();
void CalcDiv_f();
void CalcMult_f();
void Menu_f();
int nNumber1,nNumber2,nResult;
int main(void)
{
int nMenuChoice;
Menu_f();
scanf("%d",&nMenuChoice);
switch(nMenuChoice)
{
case 1:
SolveForX_f();
break;
case 2:
SubMain_f();
break;
case 3:
MmToM_f();
break;
case 4:
InchesToFeet_f();
break;
case 5:
CelsiusToFahrenheit_f();
break;
case 6:
SqRoot_f();
break;
case 7:
Quadformula_f();
break;
case 8:
return 0;
default:
printf("Please choose from one of the choices above!\n");
break;
}
return 0;
}
void Menu_f()
{
printf("\n\t\t Math Homework Helper Vesion 1.0");
printf("\n1.Solve For The XValue");
printf("\n2.Simple Calculation");
printf("\n3.Covert Millimeter To Meter");
printf("\n4.Covert Feet To Inches");
printf("\n5.Covert Celsius To fahrenhiet");
printf("\n6.Find the square root of anumber");
printf("\n7.QUADRATIC FORMULA");
printf("\n8.Exit");
printf("\nChoice:");
getch();
getch();
}
void SubMain_f()
{
char chChoice;
system("cls");
printf("=====================================================\n");
printf("1.Add some numbers\n");
printf("2.Subtract two numbers\n");
printf("3.Divide two numbers\n");
printf("4.Multiply two numbers\n");
printf("5.Back MainMenu\n");
printf("=====================================================\n");
printf("Choice:");
scanf("%c",&chChoice);
switch(chChoice)
{
case '1':
CalcAdd_f();
break;
case '2':
CalcSub_f();
break;
case '3':
CalcDiv_f();
break;
case '4':
CalcMult_f();
break;
case '5':
exit(0);
default:
printf("Please choose from one of the choices above\n");
break;
}
getch();
getch();
}
void CalcAdd_f()
{
float a[10],sum=0;
int N,flag=1,i;
while(flag)
{
printf("Please enter the number of numbers you want to add (<=10):");
scanf("%d",&N);
if(0<N&&N<=10)
flag=0;
}
printf("The Add Function:\n");
for(i=0;i<N;i++)
scanf("%f",&a[i]);
for(i=0;i<N;i++)
sum+=a[i];
printf("The sum is %f\n",sum);
printf("Press any key to continue\n");
getch();
getch();
SubMain_f();
}
void CalcSub_f()
{
printf("The Subtract Function:\n");
printf("First number: ");
scanf("%d",&nNumber1);
printf("Second number:");
scanf("%d",&nNumber2);
nResult=nNumber1-nNumber2;
printf("%d-%d=%d\n",nNumber1,nNumber2,nResult);
printf("Press any key to continue\n");
getch();
getch();
SubMain_f();
}
void CalcDiv_f()
{
printf("The Divide Function\n");
printf("First number:");
scanf("%d",&nNumber1);
printf("Second number:");
scanf("%d",&nNumber2);
nResult=nNumber1/nNumber2;
printf("%d/%d=%d\n",nNumber1,nNumber2,nResult);
printf("Press any key to continue\n");
getch();
getch();
SubMain_f();
}
void CalcMult_f()
{
printf("The Multiply Function\n");
printf("First number:");
scanf("%d",&nNumber1);
printf("Second number:");
scanf("%d",&nNumber2);
nResult=nNumber1*nNumber2;
printf("%d*%d=%d\n",nNumber1,nNumber2,nResult);
printf("Press any key to continue\n");
getch();
getch();
SubMain_f();
}
void SqRoot_f()
{
int flag=1;
printf("The Square Root Function\n");
while(flag)
{
printf("Please input a number");
scanf("%d",&nNumber1);
if(nNumber1>=0)
flag=0;
}
nResult=sqrt(nNumber1);
printf("The square root of %d is %d\n",nNumber1,nResult);
printf("Press any key to continue\n");
getch();
getch();
Menu_f();
}
void SolveForX_f()
{
int nCoef,nWholeNumber,nEqual,nX;
printf("\nThis will run you through solving for x in the since that the");
printf("\nProgram reds like y=2x+3");
printf("\nOnly put in one number at a time then push enter");
printf("\nMore instructions will come after you put that number in and push enter\n\n");
printf("y=");
scanf("%d",&nCoef);
printf("%dx+",nCoef);
scanf("%d",&nWholeNumber);
printf("%dx+%d=",nCoef,nWholeNumber);
scanf("%d",&nEqual);
for(;;)
{
nX=rand()%100;
if(((nCoef*nX)+nWholeNumber)==nEqual)
{
printf("\nWe found out that x is equal to %d\n\n",nX);
system("PAUSE");
system("PAUSE");
getch();
exit(0);
}
}
}
void MmToM_f()
{
double dlMeter;
double dlMilimeter;
printf("Enter the value in Milimeters:");
scanf("%lf",&dlMilimeter);
if(dlMilimeter<1000)
{
printf("Way to low buddy.Number MUST be over 1000!!!\n");
MmToM_f();
}
dlMeter=(dlMilimeter/1000);
printf("\n^The answer to your question is:%lf meters\n\n",dlMeter);
getch();
}
void InchesToFeet_f()
{
float flFeet;
float flInch;
printf("\nEnter the number of feet to get the length in inches:");
scanf("%f",&flInch);
flFeet=12*flInch;
printf("\n\nOh that is %f feet\n\n",flFeet);
system("PAUSE");
getch();
exit(0);
}
void CelsiusToFahrenheit_f()
{
int nFahrenheit;
int nFactor;
int nCelsius;
printf("Enter the temperature in Celsius:");
scanf("%d",&nCelsius);
nFactor=212-32;
nFahrenheit=nFactor*nCelsius/100+32;
printf("Fahrenheit value is:%d\n",nFahrenheit);
getch();
}
void Quadformula_f()
{
int nCoefa,nCoefb,nCoefc;
float flHalfDone;
float flTopA;
float flTopB;
float flWholeA;
float flWholeB;
printf("\nWhat is the value of a:");
scanf("%d",&nCoefa);
printf("\nWhat is the value of b:");
scanf("%d",&nCoefb);
printf("\nWhat is the value of c:");
scanf("%d",&nCoefc);
if(nCoefb<0)
nCoefb+=nCoefb*nCoefb;
else nCoefb-=nCoefb*nCoefb;
flHalfDone=sqrt((nCoefb*nCoefb)-(4*nCoefa*nCoefb));
flTopA=nCoefb+flHalfDone;
flTopB=nCoefb-flHalfDone;
flWholeA=flTopA/(2*nCoefa);
flWholeB=flTopB/(2*nCoefa);
printf("X's Are %f,%f\n",flWholeA,flWholeB);
getch();
exit(0);
}
就像当初在学校里做程序设计一样,由于编译软件或是电脑的问题导致中间出了好多麻烦.还好我坚持下来了.这应该也算是一点进步吧.
感觉自己真的爱上了这份职业,现在应该还只是自己的专业.但是我想有了这份喜好,有了这份执着,终有一天我能享受它给我带来的快乐!
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