CProgrammingWorld123

(1) + (1+2) + (1+2+3) + (1+2+3+4) + ... + (1+2+3+4+...+n)

2020-09-30T09:18:00.003-07:00

Write a program in C for Series

int main()

{

int i,j,n,sum=0;

n=10;

for(i=1;i<=n;i++)

{

for(j=1;j<=i;j++)

{

sum+=j;

}

printf("Sum: %d",sum);

return 0;

}

Series: (11) + (22) + (33) + (44) + (55) + ... + (nn)

2020-09-24T01:37:00.003-07:00

Write a program in C for Series

int main()

{

int i,n,sum=0;

n=10;

for(i=1;i<=n;i++)

{

sum+=i*i;

}

printf("Sum: %d",sum);

return 0;

}

Merge Two Arrays

2020-09-11T12:13:00.000-07:00

/*
Write a program in C for Merge two Arrays
*/

#include <stdio.h>
#include <stdlib.h>

//sort array in ascending order
void sortArray(int *array, int n) {
        int i, j, temp;
        for (i = 0; i < n - 1; i++) {
                for (j = i + 1; j < n; j++) {
                        if (array[i] > array[j]) {
                                temp = array[i];
                                array[i] = array[j];
                                array[j] = temp;
                        }
                }
        }
}

/* merge input arrays "input1" and "input2" to form "output" array */
int * mergeArrays(int *input1, int *input2, int n1, int n2) {
        int i, j, k, n, *output;
        n = n1 + n2;
        i = j = k = 0;
        output = (int *)malloc(sizeof (int) * n);
        while (i <= n) {
                if (input1[k] < input2[j]) {
                        output[i] = input1[k];
                        k++;
                        if (k >= n1) {
                                while (j < n2) {
                                        i++;
                                        output[i] = input2[j];
                                        j++;
                                }
                        }
                } else {
                        output[i] = input2[j];
                        j++;
                        if (j >= n2) {
                                while (k < n1) {
                                        i++;
                                        output[i] = input1[k];
                                        k++;
                                }
                        }
                }
                i++;
        }
        return output;
}

/* display contents of the given array */
void display(int *array, int n) {
        int i;
        for (i = 0; i < n; i++) {
                printf("%d ", array[i]);
        }
        printf("\n");
}

int main() {
        int i, n1, n2, *input1, *input2, *output;

        printf("Enter the no of elements for array 1 & 2:");
        scanf("%d%d", &n1, &n2);

        input1 = (int *)malloc(sizeof (int) * n1);
        input2 = (int *)malloc(sizeof (int) * n2);

        printf("Input for Array 1:\n");

        for (i = 0; i < n1; i++) {
                printf("input1[%d]:", i);
                scanf("%d", &input1[i]);
        }

        printf("Input for Array 2:\n");

        for (i = 0; i < n2; i++) {
                printf("input2[%d]:", i);
                scanf("%d", &input2[i]);
        }

        sortArray(input1, n1);
        sortArray(input2, n2);

        printf("\nInput Array 1:");

        display(input1, n1);

        printf("Input Array 2:");
        display(input2, n2);

        output = mergeArrays(input1, input2, n1, n2);
        printf("Output Array After Merge Operation:\n");

        display(output, n1 + n2);
        return 0;
}

Write to Text File

2020-08-31T10:39:00.003-07:00

/*
Write a program in C for Writing text to Text File
*/

#include<stdio.h>

int main()
{
FILE *fp;
char mystr[100];

fp=fopen("mytext.txt","w");

if(fp==NULL)
{
puts("Some error occured.");
return 1;
}

printf("\nEnter some lines:\n");

while(strlen(gets(mystr))>0)
{
fputs(mystr,fp);
fputs("\n",fp);
}

fclose(fp);
return 0;
}

Count Characters of Files

2020-08-31T10:37:00.001-07:00

/*
Write a program in C for Count Characters of Files
*/

#include<stdio.h>

main()

{

char ch;
int count=0;
FILE *fptr;
fptr=fopen("text.txt","w");

if(fptr==NULL)
{
printf("File can't be created\a");
getch();
return 0;
}

printf("Enter some text and press enter key:\n");

while((ch=getche())!='\r')
{
fputc(ch,fptr);
}

fclose(fptr);
fptr=fopen("text.txt","r");
printf("\nContents of the File is:");

while((ch=fgetc(fptr))!=EOF)
{
count++;
printf("%c",ch);
}

fclose(fptr);

printf("\nThe number of characters present in file is: %d",count);

getch();

}

File to Upper Case Using Command Line Arguments

2020-08-31T10:33:00.002-07:00

/*
Write a program in C for File to Upper Case Using Commad Line Argument
*/

#include<stdio.h>

int main(int n,char *a[])
{
int c;
FILE *fr,*fw;

if(n!=3)
{
printf("Invalide numbers of arguments.");
return 1;
}

if((fr=fopen(a[1],"r"))==NULL)
{
printf("File can't be open.");
return 1;
}

if((fw=fopen(a[2],"r+"))==NULL)
{
printf("File can't be open.");
fclose(fr);
return 1;
}

while(1)
{
c=fgetc(fr);
if(feof(fr)) break;
c=~c;
fputc(c,fw);
}
fclose(fr);
fclose(fw);
return 0;
}

File Copy Using Command Line Arguments

2020-08-31T10:29:00.003-07:00

/*
Write a program in C for File Copy using Command Line Arguments
*/

#include<stdio.h>

int main(int argc,char *argv[])
{
FILE *fs,*ft;
int ch;

if(argc!=3)
{
printf("Invalide numbers of arguments.");
return 1;
}

fs=fopen(argv[1],"r");

if(fs==NULL)
{
printf("Can't find the source file.");
return 1;
}

ft=fopen(argv[2],"w");

if(ft==NULL)
{
printf("Can't open target file.");
fclose(fs);
return 1;
}

while(1)
{
ch=fgetc(fs);
if (feof(fs)) break;
fputc(ch,ft);
}

fclose(fs);
fclose(ft);
return 0;
}

Alphabet Pattern Program in C - 12

2020-08-26T09:37:00.002-07:00

/*
Write a program in C for Alphabet Pattern
*/

#include <stdio.h>

int main()
{
    int i, j;
    for(i=1;i<=5;i++)
    {
        for(j=5;j>=i;j--)
        {
            printf("%c",'A'-1 + i);
        }
        printf("\n");
    }

    return 0;
}

Alphabet Pattern Program in C - 11

2020-08-26T09:35:00.002-07:00

/*
Write a program in C for Alphabet Pattern Program
*/

#include <stdio.h>

int main()
{
    int i, j;
    for(i=5;i>=1;i--)
    {
        for(j=1;j<=i;j++)
        {
            printf("%c",'A'-1 + i);
        }
        printf("\n");
    }

    return 0;
}

Alphabet Pattern Program in C - 10

2020-08-26T09:33:00.002-07:00

/*
Write a program in C for Alphabet Pattern
*/

#include <stdio.h>

int main()
{
    int i, j;
    for(i=5;i>=1;i--)
    {
        for(j=5;j>=i;j--)
        {
            printf("%c",'A'-1 + i);
        }
        printf("\n");
    }

    return 0;
}

Alphabet Pattern Program in C - 9

2020-08-26T09:31:00.003-07:00

/*
Write a program in C for Alphabet Pattern
*/

#include <stdio.h>

int main()
{
    int i, j;
    for(i=1;i<=5;i++)
    {
        for(j=1;j<=i;j++)
        {
            printf("%c",'A'-1 + i);
        }
        printf("\n");
    }

    return 0;
}

Alphabet Pattern Program in C - 8

2020-08-26T09:29:00.004-07:00

/*
Write a program in C for Alphabet Pattern
*/

#include <stdio.h>

int main()
{
    int i, j;
    for(i=1;i<=5;i++)
    {
        for(j=5;j>=i;j--)
        {
            printf("%c",'A'-1 + j);
        }
        printf("\n");
    }

    return 0;
}

Alphabet Pattern Program in C - 7

2020-08-26T09:27:00.002-07:00

/*
Write a program in C for Alphabet Pattern
*/

#include <stdio.h>

int main()
{
    int i, j;
    for(i=5;i>=1;i--)
    {
        for(j=i;j>=1;j--)
        {
            printf("%c",'A'-1 + j);
        }
        printf("\n");
    }

    return 0;
}

Alphabet Pattern Program in C - 6

2020-08-26T09:25:00.002-07:00

/*
Write a program in C for Alphabet Pattern
*/

#include <stdio.h>

int main()
{
    int i, j;
    for(i=1;i<=5;i++)
    {
        for(j=i;j<=5;j++)
        {
            printf("%c", 'A'-1 + j);
        }
        printf("\n");
    }

    return 0;
}

Alphabet Pattern Program in C - 5

2020-08-26T09:23:00.001-07:00

/*
Write a program in C for Alphabet Pattern
*/

#include <stdio.h>

int main()
{
    int i, j;
    for(i=5;i>=1;i--)
    {
        for(j=1;j<=i;j++)
        {
            printf("%c",'A' + j-1);
        }
        printf("\n");
    }

    return 0;
}

Alphabet Pattern Program in C - 4

2020-08-26T09:21:00.003-07:00

/*
Write a program in C for Alphabet Pattern
*/

#include <stdio.h>

int main()
{
    int i, j;
    for(i=5;i>=1;i--)
    {
        for(j=5;j>=i;j--)
        {
            printf("%c",'A' + j-1);
        }
        printf("\n");
    }

    return 0;
}

Alphabet Pattern Program in C - 3

2020-08-26T09:16:00.000-07:00

/*
Write a program in C for Alphabet Pattern Program
*/

#include <stdio.h>

int main()
{
    int i, j;
    for(i=1;i<=5;i++)
    {
        for(j=i;j>=1;j--)
        {
            printf("%c",'A' + j-1);
        }
        printf("\n");
    }

    return 0;
}

Alphabet Pattern Program in C - 2

2020-08-26T09:14:00.001-07:00

/*
Write a program in C for Alphabet Pattern
*/

#include <stdio.h>

int main()
{
    int i, j;
    for(i=5;i>=1;i--)
    {
        for(j=i;j<=5;j++)
        {
            printf("%c",'A' + j-1);
        }
        printf("\n");
    }

    return 0;
}

Alphabet Pattern Program in C - 1

2020-08-26T09:11:00.002-07:00

/*
Write a program in C for Alphabet Pattern
*/

#include <stdio.h>

int main()
{
    int i, j;
    for(i=1;i<=5;i++)
    {
        for(j=1;j<=i;j++)
        {
            printf("%c",'A' + j-1);
        }
        printf("\n");
    }

    return 0;
}

Number Pattern Program in C - 60

2020-08-23T12:35:00.002-07:00

N=39714

/*
Write a program in C for Number Pattern Program
*/

#include <stdio.h>

int main()
{
    long n = 39714, i=1;
    for(i=10;i<n;i*=10);

    for (i=i/10; n>0; i/=10)
    {
        printf("%d\n", n);
        n%=i;
    }

    return 0;
}

Number Pattern Program in C - 59

2020-08-23T12:33:00.000-07:00

/*
Write a program in C for Number Pattern Program
*/

int main()
{
int i,j,k=6,l=13,m=16;
for(i=1;i<=5;i++)
{
    for(j=1;j<=5;j++)
    {
      if(i==1)
        printf("%-3d",j);
      else if(j==5)
        printf("%-3d",k++);
      else if(i==5)
        printf("%-3d",l--);
      else if(j==1)
        printf("%-3d",m--);
      else
        printf("   ");
    }
    printf("\n");
}
return 0;
}

Number Pattern Program in C - 58

2020-08-23T12:31:00.001-07:00

/*
Write a program in C for Number Pattern Program
*/

int main()
{
int i,j,k;
for(i=1;i<=4;i++)
{
    for(j=4;j>=(i-1)*2-1;j--)
      printf(" ");
    printf("%d",i);
    for(j=2;j<=(i-1)*4;j++)
      printf(" ");
    if(i>1)
      printf("%d",i);
    printf("\n");
}
for(i=3;i>=1;i--)
{
    for(j=4;j>=(i-1)*2-1;j--)
      printf(" ");
    printf("%d",i);
    for(j=2;j<=(i-1)*4;j++)
      printf(" ");
    if(i>1)
      printf("%d",i);
    printf("\n");
}
return 0;
}

Number Pattern Program in C - 57

2020-08-23T12:29:00.002-07:00

/*
Write a program in C for Number Pattern Program
*/

int main()
{
    int i, j;
    for(i=1;i<=5;i++)
    {
      for(j=5;j>i;j--)
        printf(" ");
      for(j=1;j<=i;j++)
          printf("%d ",j);
      for(j=j-2;j>=1;j--)
          printf("%d ",j);
      printf("\n");
    }
    return 0;
}

Number Pattern Program in C - 56

2020-08-23T12:28:00.000-07:00

/*
Write a program in C for Number Pattern Program
*/

int main()
{
    int i,j,k=1;
    int m[5][5]={0};
    for(i=0;i<5;i++)
    {
        for(j=i;j<=4;j++)
            m[j][i]=k++;
    }
    for(i=0;i<5;i++)
    {
        for(j=0;j<5;j++)
        {
            if(m[i][j]==0)
                printf(" ");
            else
                printf("%d ",m[i][j]);
        }
        printf("\n");
    }
    return 0;
}

Number Pattern Program in C - 55

2020-08-23T12:24:00.002-07:00

/*
Write a program in C for Number Pattern Program
*/

int main()
{
    int i,j,k=1;
    int m[7][7]={0};
    for(i=1;i<=7;i++)
    {
        for(j=1;j<=7;j++)
            if(j==i || 8-i==j)
                m[i-1][j-1]=k;
            if(i<4) k++;
            else --k;

    }
    for(i=0;i<7;i++)
    {
        for(j=0;j<7;j++)
        {
            if(m[i][j]==0)
                printf(" ");
            else
                printf("%d",m[i][j]);
        }
        printf("\n");
    }
    return 0;
}