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  1. CODE::
  2.  
  3. #include<stdio.h>
  4. //defining constants
  5. #define DOLLAR 100
  6. #define QUARTER 25
  7. #define DIME 10
  8. #define NICKEL 5
  9. #define PENNIES 1
  10.  
  11. //converting method
  12. void ExactChange(int userTotal,int coinVals[])
  13. {
  14.  
  15.  
  16. //checking dollars
  17. if (userTotal >=100)
  18. {
  19.  
  20.  
  21. coinVals[0]=userTotal/DOLLAR;
  22. userTotal=userTotal-(100*coinVals[0]);
  23.  
  24.  
  25. }
  26. //checking quarters
  27. if (userTotal >=25)
  28. {
  29.  
  30.  
  31. coinVals[1]=userTotal/QUARTER;
  32. userTotal=userTotal-(25*coinVals[1] );
  33.  
  34.  
  35. }
  36. //checking dimes
  37. if (userTotal >=10)
  38. {
  39.  
  40.  
  41. coinVals[2]=userTotal/DIME;
  42. userTotal=userTotal-(10*coinVals[2]);
  43.  
  44.  
  45. }
  46. //checking nickels
  47. if (userTotal >=5)
  48. {
  49.  
  50.  
  51. coinVals[3]=userTotal/NICKEL;
  52. userTotal=userTotal-(5*coinVals[3]);
  53.  
  54.  
  55. }
  56. //checking pennies
  57. if (userTotal >=1)
  58. {
  59.  
  60.  
  61. coinVals[4]=userTotal/PENNIES;
  62. userTotal=userTotal-coinVals[4];
  63.  
  64.  
  65. }
  66.  
  67. }
  68. //main method
  69. int main() {
  70.  
  71. //defining the variables
  72. int amount;
  73.  
  74. //asking for input
  75. printf("Enter the amount in cents :");
  76. //reading the input
  77. scanf("%d",&amount);
  78. //validating the input
  79. if(amount<1)
  80. {
  81.  
  82.  
  83. //printing the message
  84. printf("No change..!");
  85.  
  86.  
  87. }
  88. //when the input is >0
  89. else
  90. {
  91.  
  92.  
  93. int coinVals[5]={0,0,0,0,0};
  94. ExactChange(amount,coinVals);
  95. //checking dollars
  96. if (coinVals[0]>0)
  97. {
  98.  
  99.  
  100. //printing dollars
  101. printf("%d Dollar",coinVals[0]);
  102. if(coinVals[0]>1) printf("s");
  103.  
  104. }
  105. //checking quarters
  106. if (coinVals[1]>0)
  107. {
  108.  
  109. //printing quarters
  110. printf(" %d Quarter",coinVals[1]);
  111. if(coinVals[1]>1) printf("s");
  112.  
  113. }
  114. //checking dimes
  115. if (coinVals[2]>0)
  116. {
  117.  
  118. //printing dimes
  119. printf(" %d Dime",coinVals[2]);
  120. if(coinVals[2]>1) printf("s");
  121.  
  122. }
  123. //checking nickels
  124. if (coinVals[3]>0)
  125.  
  126. {
  127.  
  128. //prinitng nickels
  129. printf(" %d Nickel",coinVals[3]);
  130. if(coinVals[3]>1) printf("s");
  131.  
  132. }
  133. //checking pennies
  134. if (coinVals[4]>0)
  135. {
  136.  
  137. //printing pennies
  138. printf(" %d Penn",coinVals[4]);
  139. if(coinVals[4]>1) printf("ies");
  140. else printf("y");
  141.  
  142. }
  143.  
  144. }
  145. //end of main method
  146.  
  147.  
  148. }
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