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Merge pull requestTheAlgorithms#146 from JRaiden16/patch-2

Update Simpson's_1-3rd_rule.c

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Lines changed: 21 additions & 14 deletions

Original file line number	Diff line number	Diff line change
`@@ -1,34 +1,41 @@`
`1`		`-#include<conio.h>`
`2`	`1`	`#include<stdio.h>`
`3`	`2`	`#include<math.h>`
`4`		`-floatf(floatx)`
	`3`	`+`
	`4`	`+floatf(floatx)`
`5`	`5`	`{`
`6`		`-return1.0+xxx;`
	`6`	`+return1.0+xxx;//This is the expresion of the function to integrate?`
`7`	`7`	`}`
	`8`	`+`
`8`	`9`	`voidmain()`
`9`	`10`	`{`
`10`	`11`	`inti,n;`
`11`	`12`	`floata,b,h,x,s2,s3,sum,integral;`
`12`		`-printf("enter the lower limit of the integration");`
`13`		`-sacnf("%f",&a);`
`14`		`-printf("enter the upper limit of the integration");`
`15`		`-sacnf("%f",&b);`
`16`		`-printf("enter the number of intervals");`
`17`		`-sacnf("%d",&n);`
	`13`	`+`
	`14`	`+printf("enter the lower limit of the integration:");`
	`15`	`+scanf("%f",&a);`
	`16`	`+printf("enter the upper limit of the integration:");`
	`17`	`+scanf("%f",&b);`
	`18`	`+printf("enter the number of intervals:");`
	`19`	`+scanf("%d",&n);`
	`20`	`+`
`18`	`21`	`h=(b-a)/n;`
`19`	`22`	`sum=f(a)+f(b);`
`20`	`23`	`s2=s3=0.0;`
`21`		`-for(i=1;i<n;i+=3)`
	`24`	`+`
	`25`	`+for(i=1;i<n;i+=3)`
`22`	`26`	`{`
`23`	`27`	`x=a+i*h;`
`24`	`28`	`s3=s3+f(x)+f(x+h);`
`25`	`29`	`}`
`26`		`-for(i=3;i<n;i+=3)`
	`30`	`+`
	`31`	`+for(i=3;i<n;i+=3)`
`27`	`32`	`{`
`28`	`33`	`x=a+i*h;`
`29`	`34`	`s2=s2+f(x);`
`30`	`35`	`}`
`31`		`-intgral=(h/3.0)(sum+2s2+4*s3);`
`32`		`-printf("\nvalue of the integral =%9.4f\n",integral);`
`33`		`-getch();`
	`36`	`+`
	`37`	`+integral=(h/3.0)(sum+2s2+4*s3);`
	`38`	`+printf("\nValue of the integral = %9.4f\n",integral);`
	`39`	`+`
	`40`	`+return0;`
`34`	`41`	`}`

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