Please help me

[DamarisReagan]

1.C prog to find the sum of series 1+(1/3!)-(1/5!)+(1/7!) uptop 20 terms upto 3 decimal places.
2.C prog to find the sum of cubes of first n integers.
3.C prog to calculate the length of string without using strlen function.
4.C prog to read a text file and replace its content in such a way that only one word is found in each line.
5.Given 3 integers , write a C prog to find the minimum among these by pairwise comparison.
6.C prog to find the sum of series 1+x-((x^2)/2)+((x^3)/3)-((x^4)/4) upto 20 terms.
7.C prog to find the sum of series 1+(1/2!)-(1/3!)+(1/4!)-(1/5!)upto first n integers has to be evaluated.
8.C prog to verify whether a square matrix is symmetric or not .
9.A text file that stores number of students in a class, one per line exists.Write a C prog to read this file and write it in reverse order.
10.C prog to print the sum of series S=x-((x^3)/3!)+((x^5)/5!)+((x^7)/7!)+…..n terms

[GWILouisaxwzkla]

Do you have a formula for the sum of the first series ( or the name ) ?

[GWILouisaxwzkla]

3.

<br /> /****************************************************************<br /> * File Name : c:programshelptempCG.cpp<br /> * Date : November,17,2008<br /> * Comments : new project<br /> * Compiler/Assembler :<br /> *<br /> *<br /> *<br /> *<br /> *<br /> * Program Shell Generated At: 7:02:58 p.m.<br /> =-=-=-=-=-=-=-=--=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/<br /> <br /> <br /> #include < stdio.h ><br /> //#include < string.h ><br /> //#include < conio.h ><br /> //#include < math.h ><br /> //#include < iomanip ><br /> //#include < ctype.h ><br /> #define MAX_LENGTH 50<br /> <br /> <br /> <br /> //@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ FUNCTION PROTOTYPES @@@@@@@@@@@@@@@@@@@@@@@@@@<br /> <br /> int strLength ( char * );<br /> <br /> //##################################################################################<br /> <br /> <br /> //main function ******************************<br /> <br /> int main ( )<br /> {<br /> <br /> char str [ MAX_LENGTH ];<br /> <br /> printf ( "Enter a string " );<br /> scanf ( "%s" , str );<br /> int lengthStr = strLength ( str );<br /> printf ( "length of string %i n" , lengthStr );<br /> return 0 ;<br /> }<br /> <br /> <br /> /******************************* FUNCTION DEFINITION ******************************<br /> <br /> Name : strLength<br /> Parameters :<br /> <br /> char *<br /> <br /> <br /> Returns: int type<br /> Comments: string must be null terminated<br /> <br /> <br /> <br /> ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++*/<br /> int strLength ( char * str )<br /> {<br /> <br /> int i = 0;<br /> <br /> while ( str [ i ] != 0 )<br /> {<br /> i ++;<br /> }<br /> <br /> <br /> return i;<br /> }<br /> <br />

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<br /> /****************************************************************<br /> * File Name : c:programshelptempCG.cpp<br /> * Date : November,17,2008<br /> * Comments : new project<br /> * Compiler/Assembler :<br /> *<br /> *<br /> *<br /> *<br /> *<br /> * Program Shell Generated At: 7:02:58 p.m.<br /> =-=-=-=-=-=-=-=--=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/<br /> <br /> <br /> #include < stdio.h ><br /> //#include < string.h ><br /> //#include < conio.h ><br /> //#include < math.h ><br /> //#include < iomanip ><br /> //#include < ctype.h ><br /> #define MAX_LENGTH 50<br /> <br /> <br /> <br /> //@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ FUNCTION PROTOTYPES @@@@@@@@@@@@@@@@@@@@@@@@@@<br /> <br /> int strLength ( char * );<br /> <br /> //##################################################################################<br /> <br /> <br /> //main function ******************************<br /> <br /> int main ( )<br /> {<br /> <br /> char str [ MAX_LENGTH ];<br /> <br /> printf ( "Enter a string " );<br /> scanf ( "%s" , str );<br /> int lengthStr = strLength ( str );<br /> printf ( "length of string %i n" , lengthStr );<br /> return 0 ;<br /> }<br /> <br /> <br /> /******************************* FUNCTION DEFINITION ******************************<br /> <br /> Name : strLength<br /> Parameters :<br /> <br /> char *<br /> <br /> <br /> Returns: int type<br /> Comments: string must be null terminated<br /> <br /> <br /> <br /> ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++*/<br /> int strLength ( char * str )<br /> {<br /> <br /> int i = 0;<br /> <br /> while ( str [ i ] != 0 )<br /> {<br /> i ++;<br /> }<br /> <br /> <br /> return i;<br /> }<br /> <br />

2.

<br /> /****************************************************************<br /> * File Name : c:programshelptempCG.cpp<br /> * Date : November,17,2008<br /> * Comments : new project<br /> * Compiler/Assembler :<br /> *<br /> *<br /> *<br /> *<br /> *<br /> * Program Shell Generated At: 7:02:58 p.m.<br /> =-=-=-=-=-=-=-=--=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/<br /> <br /> <br /> #include < stdio.h ><br /> //#include < string.h ><br /> //#include < conio.h ><br /> //#include < math.h ><br /> //#include < iomanip ><br /> //#include < ctype.h ><br /> <br /> <br /> <br /> <br /> //@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ FUNCTION PROTOTYPES @@@@@@@@@@@@@@@@@@@@@@@@@@<br /> <br /> <br /> <br /> //##################################################################################<br /> <br /> <br /> //main function ******************************<br /> <br /> int main ( )<br /> {<br /> <br /> int sLength;<br /> int sum = 0;<br /> int i = 1;<br /> printf ( "Enter length of series " );<br /> scanf ( "%i" , &#038; sLength );<br /> <br /> <br /> while ( i <= sLength )<br /> {<br /> sum = sum + ( i * i * i );<br /> i ++;<br /> }<br /> <br /> printf ( "the sum is %i n " , sum );<br /> <br /> <br /> <br /> <br /> <br /> }<br /> <br /> <br />

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<br /> /****************************************************************<br /> * File Name : c:programshelptempCG.cpp<br /> * Date : November,17,2008<br /> * Comments : new project<br /> * Compiler/Assembler :<br /> *<br /> *<br /> *<br /> *<br /> *<br /> * Program Shell Generated At: 7:02:58 p.m.<br /> =-=-=-=-=-=-=-=--=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/<br /> <br /> <br /> #include < stdio.h ><br /> //#include < string.h ><br /> //#include < conio.h ><br /> //#include < math.h ><br /> //#include < iomanip ><br /> //#include < ctype.h ><br /> <br /> <br /> <br /> <br /> //@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ FUNCTION PROTOTYPES @@@@@@@@@@@@@@@@@@@@@@@@@@<br /> <br /> <br /> <br /> //##################################################################################<br /> <br /> <br /> //main function ******************************<br /> <br /> int main ( )<br /> {<br /> <br /> int sLength;<br /> int sum = 0;<br /> int i = 1;<br /> printf ( "Enter length of series " );<br /> scanf ( "%i" , &#038; sLength );<br /> <br /> <br /> while ( i <= sLength )<br /> {<br /> sum = sum + ( i * i * i );<br /> i ++;<br /> }<br /> <br /> printf ( "the sum is %i n " , sum );<br /> <br /> <br /> <br /> <br /> <br /> }<br /> <br /> <br />

[GWILouisaxwzkla]

4.

<br /> /****************************************************************<br /> * File Name : c:programshelptempCG.cpp<br /> * Date : November,17,2008<br /> * Comments : new project<br /> * Compiler/Assembler :<br /> *<br /> *<br /> *<br /> *<br /> *<br /> * Program Shell Generated At: 7:02:58 p.m.<br /> =-=-=-=-=-=-=-=--=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/<br /> <br /> <br /> #include < stdio.h ><br /> //#include < string.h ><br /> //#include < conio.h ><br /> //#include < math.h ><br /> //#include < iomanip ><br /> //#include < ctype.h ><br /> #define MAX_LENGTH 50<br /> <br /> <br /> <br /> //@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ FUNCTION PROTOTYPES @@@@@@@@@@@@@@@@@@@@@@@@@@<br /> <br /> <br /> <br /> //##################################################################################<br /> <br /> <br /> //main function ******************************<br /> <br /> int main ( )<br /> {<br /> <br /> FILE * file1 = fopen ( "c:\programs\data.txt", "r+" );<br /> FILE * file2 = fopen ( "c:\programs\data2.txt", "w+" );<br /> char word [ MAX_LENGTH ];<br /> <br /> if( file1 == 0 || file2 == 0 )<br /> {<br /> printf( "A file did not open n" );<br /> return 1;<br /> }<br /> <br /> fscanf ( file1 , "%s", &#038; word );<br /> while ( ! feof ( file1 ) )<br /> {<br /> <br /> fprintf( file2 , word );<br /> fprintf( file2 , "n" );<br /> fscanf ( file1 , "%s", &#038; word );<br /> }<br /> fclose ( file1 );<br /> fclose ( file2 );<br /> return 0;<br /> <br /> }<br />

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<br /> /****************************************************************<br /> * File Name : c:programshelptempCG.cpp<br /> * Date : November,17,2008<br /> * Comments : new project<br /> * Compiler/Assembler :<br /> *<br /> *<br /> *<br /> *<br /> *<br /> * Program Shell Generated At: 7:02:58 p.m.<br /> =-=-=-=-=-=-=-=--=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/<br /> <br /> <br /> #include < stdio.h ><br /> //#include < string.h ><br /> //#include < conio.h ><br /> //#include < math.h ><br /> //#include < iomanip ><br /> //#include < ctype.h ><br /> #define MAX_LENGTH 50<br /> <br /> <br /> <br /> //@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ FUNCTION PROTOTYPES @@@@@@@@@@@@@@@@@@@@@@@@@@<br /> <br /> <br /> <br /> //##################################################################################<br /> <br /> <br /> //main function ******************************<br /> <br /> int main ( )<br /> {<br /> <br /> FILE * file1 = fopen ( "c:\programs\data.txt", "r+" );<br /> FILE * file2 = fopen ( "c:\programs\data2.txt", "w+" );<br /> char word [ MAX_LENGTH ];<br /> <br /> if( file1 == 0 || file2 == 0 )<br /> {<br /> printf( "A file did not open n" );<br /> return 1;<br /> }<br /> <br /> fscanf ( file1 , "%s", &#038; word );<br /> while ( ! feof ( file1 ) )<br /> {<br /> <br /> fprintf( file2 , word );<br /> fprintf( file2 , "n" );<br /> fscanf ( file1 , "%s", &#038; word );<br /> }<br /> fclose ( file1 );<br /> fclose ( file2 );<br /> return 0;<br /> <br /> }<br />

5.

<br /> /****************************************************************<br /> * File Name : c:programshelptempCG.cpp<br /> * Date : November,17,2008<br /> * Comments : new project<br /> * Compiler/Assembler :<br /> *<br /> *<br /> *<br /> *<br /> *<br /> * Program Shell Generated At: 7:02:58 p.m.<br /> =-=-=-=-=-=-=-=--=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/<br /> <br /> <br /> #include < stdio.h ><br /> //#include < string.h ><br /> //#include < conio.h ><br /> //#include < math.h ><br /> //#include < iomanip ><br /> //#include < ctype.h ><br /> #define MAX_LENGTH 50<br /> <br /> <br /> <br /> //@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ FUNCTION PROTOTYPES @@@@@@@@@@@@@@@@@@@@@@@@@@<br /> <br /> <br /> <br /> //##################################################################################<br /> <br /> <br /> //main function ******************************<br /> <br /> int main ( )<br /> {<br /> <br /> int one , two , three , smallest;<br /> <br /> printf ( "enter an integer: " );<br /> scanf ( "%i" , &#038; one );<br /> printf ( "enter an integer: " );<br /> scanf ( "%i" , &#038; two );<br /> printf ( "enter an integer: " );<br /> scanf ( "%i" , &#038; three );<br /> <br /> if ( one < two )<br /> smallest = one;<br /> else<br /> smallest = two;<br /> if ( three < smallest )<br /> smallest = three;<br /> <br /> printf ( "the smallest is %i n" , smallest );<br /> <br /> <br /> }<br /> <br /> <br /> <br /> <br /> <br />

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<br /> /****************************************************************<br /> * File Name : c:programshelptempCG.cpp<br /> * Date : November,17,2008<br /> * Comments : new project<br /> * Compiler/Assembler :<br /> *<br /> *<br /> *<br /> *<br /> *<br /> * Program Shell Generated At: 7:02:58 p.m.<br /> =-=-=-=-=-=-=-=--=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/<br /> <br /> <br /> #include < stdio.h ><br /> //#include < string.h ><br /> //#include < conio.h ><br /> //#include < math.h ><br /> //#include < iomanip ><br /> //#include < ctype.h ><br /> #define MAX_LENGTH 50<br /> <br /> <br /> <br /> //@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ FUNCTION PROTOTYPES @@@@@@@@@@@@@@@@@@@@@@@@@@<br /> <br /> <br /> <br /> //##################################################################################<br /> <br /> <br /> //main function ******************************<br /> <br /> int main ( )<br /> {<br /> <br /> int one , two , three , smallest;<br /> <br /> printf ( "enter an integer: " );<br /> scanf ( "%i" , &#038; one );<br /> printf ( "enter an integer: " );<br /> scanf ( "%i" , &#038; two );<br /> printf ( "enter an integer: " );<br /> scanf ( "%i" , &#038; three );<br /> <br /> if ( one < two )<br /> smallest = one;<br /> else<br /> smallest = two;<br /> if ( three < smallest   )<br /> smallest = three;<br /> <br /> printf ( "the smallest is  %i n" , smallest );<br /> <br /> <br /> }<br /> <br /> <br /> <br /> <br /> <br />

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