3 Satır bir metinde hangi harften kaç tane olduğunu bulan program

#include <stdio.h>
#include <string.h>
#include <ctype.h>
int main( void )
{
    char text[ 3 ][ 80 ],tampon[240]={0}; /* 3 lines of text */
char *searchPtr; /* pointer to search character */
char characters[ 26 ] = { 0 }; /* totals for each letter */
char say_characters[ 26 ] = { 0 };
int count = 0; /* total for current letter */
int i; /* loop counter */
int j; /* loop counter */
printf( "Enter three lines of text:\n" );
gets(text[0]);
gets(text[1]);
gets(text[2]);
strcat(tampon,text[0]);
strcat(tampon,text[1]);
strcat(tampon,text[2]); /* read three lines of text */

    for(j=0;j<strlen(tampon);j++){
        tampon[j]=tolower(tampon[j]);}/* convert letters to lowercase */
for(i=0;i<26;i++){
    characters[i]=(char)((int)'a'+i);
}
    searchPtr=tampon;
  
for(j=0;j<strlen(tampon);j++,searchPtr=searchPtr+1)
for(i=0;i<26;i++){
    if(characters[i]==*searchPtr){
    say_characters[i]++;
    }  
    }
/* loop through alphabet */


printf( "\nThe total occurrences of each character:\n" );
/* display totals for each character */
for ( i = 0; i <= 25; i++ ) {
printf( "%c:%3d\n", 'a' + i, say_characters[ i ] );
} /* end for */
return 0; /* indicate successful termination */
} /* end main */

05.04.2013 Günü yaptığımız çalışma :)

#include <stdio.h>
#include <time.h>
#include <stdlib.h>
#include <math.h>
#define pi 3.14
#define N 8
int main (){
     int i,k,u,v,x,y;
     double fxy[N][N]={0.0}, c[N][N]={0.0},z[N][N]={0.0},a[N],b[N];
        srand(time(NULL));
        for(x=0;x<N;x++){
        for(y=0;y<N;y++){
            fxy[x][y]=1;//rand() %250 +1;
       
            }}
    for(u=0;u<N;u++){
        for(v=0;v<N;v++){
            c[u][v]=0.0;
            if(u==0)
                a[u]=(double)(1/sqrt(2.0));
            else
                a[u]=1.0;
            if(v==0)
                b[v]=(double)(1/sqrt(2.0));
            else
                b[v]=1.0;
        for(x=0;x<N;x++){
        for(y=0;y<N;y++){
            c[u][v]+=fxy[x][y]*cos((double)((double)(2*x+1)*(double)u*(double)pi/(double)(2*N)))*cos((double)((double)(2*y+1)*(double)v*(double)pi/(double)(2*N)));
           
        }}
        c[u][v]*=((double)(2.0/N)*(double)a[u]*(double)b[v]);
        printf("%d,%d = %.3lf\t",u+1,v+1,c[u][v]);
        }}
    printf("\n");
        for(u=0;u<N;u++){
        for(v=0;v<N;v++){
        for(x=0;x<N;x++){
        for(y=0;y<N;y++){
            z[u][v]+=c[x][y]*a[u]*b[v]*cos((double)((double)(2*x+1)*(double)u*(double)pi/(double)(2*N)))*cos((double)((double)(2*y+1)*(double)v*(double)pi/(double)(2*N)));
        }}
        z[u][v]*=(double)(2.0/N);
        printf("%d,%d = %.3lf\t",u+1,v+1,z[u][v]);
        }}

}

Matrislerin toplamı, Skalerle Çarpımı ve Transpozesi

    #include<stdio.h>    /* gerekli olan fonksiyonları yazınız*/
      void scalar_mul(int matrix[3][2],int k);
      void add(int matrix1[3][2],int matrix2[3][2]);
      void transpose(int matrix5[3][2]);
      int main(){
      int matrix1 [2][3]= {{1,0,0},{0,0,1} }, i,j;
      int matrix2[3][2]={{-1,3},{6,-6},{-3,-1}};
      int matrix3[3][2]={{1,-2},{-4,4},{2,1}};
      int matrix4[3][2];
     scalar_mul(matrix3,3);
     add(matrix2,matrix3);
     transpose(matrix2);
     return(0);
        }
void transpose(int matrix5[3][2]){
    int matrix6[2][3],i,j;
    printf("Bir Matrisin Transpozesi\n");
    for(i=0;i<3;i++){
        for(j=0;j<2;j++){
            matrix6[j][i]=matrix5[i][j];
            }}
    for(i=0;i<2;i++){
        for(j=0;j<3;j++){
            printf("%d,%d: %3d\t",i+1,j+1,matrix6[i][j]);
        }
    printf("\n");
    }
printf("\n");
}

void add(int matrix1[3][2],int matrix2[3][2]){
    int i,j,tampon[3][2]={0};
    printf("2 Matrisin Toplami\n");
for(i=0;i<3;i++){
        for(j=0;j<2;j++){
            tampon[i][j]=matrix1[i][j]+matrix2[i][j];
        printf("%d,%d: %3d\t",i+1,j+1,tampon[i][j]);   
        }
printf("\n");
}
printf("\n");
}
void scalar_mul(int matrix[3][2],int k){
int tampon[3][2],i,j;
printf("Bir Matrisin Skalerle Carpimi\n");
for(i=0;i<3;i++){
        for(j=0;j<2;j++){
            tampon[i][j]=matrix[i][j]*k;
        printf("%d,%d: %3d\t",i+1,j+1,tampon[i][j]);   
        }
printf("\n");
}
printf("\n");
}