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POMissing prototype in my practice arithmetic quiz program, and almost every other program I make
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  1. POMissing prototype in my practice arithmetic quiz program, and almost every other program I make
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    copied!<p>Yesterday I was able to make a program (ASCII converter etc etc) that had the same problem [ Every function had a missing prototype error when I build the program ] I was able to fix it through random trial and error having no idea how I did it. Here's my arithmetic quiz practice program. I also tried putting int initialize(),clear(),exit(),additionquiz(),subtractionquiz(),divisionquiz(),multiplicationquiz(); and it still gave me a missing prototype. </p> <pre><code> #include &lt;stdio.h&gt; /* Main Menu */ int numbers[10]; int main() { while(1==1) { int choice; initialize(); printf("Arithmetic Quiz Program\n"); printf("1 - Addition\n2 - Subtraction\n3 - Multiplication\n4 - Division\n5 - Exit\n"); scanf("%d",&amp;choice); if(choice==1) { clear(); additionquiz(); } else if(choice==2) { clear(); subtractionquiz(); } else if(choice==3) { clear(); multiplicationquiz(); } else if(choice==4) { clear(); divisionquiz(); } else if(choice==5) { exit(); } else { printf("%cPlease choose a number from 1 - 5",7); clear(); continue; } } return 0; } /* For clearing the page */ int clear() { int i; for(i=0;i&lt;25;i++) { printf("\n"); } } /* Assigns the array */ int initialize() { numbers[0]=6; numbers[1]=0; numbers[2]=2; numbers[3]=5; numbers[4]=3; numbers[5]=1; numbers[6]=9; numbers[7]=4; numbers[8]=7; numbers[9]=8; return 0; } /* addition quiz */ int addition() { int a,diff,b,answer,choice; a=0; diff=1; b=a+diff; while(1==1) { if(a&gt;9) { a=0; diff++; } if(b&gt;9) { b=0; } if(diff&gt;9) { diff=0; } printf("%d + %d = ",number[a],number[b]); scanf("%d",&amp;answer); if(answer==number[a]+number[b]) { printf("\nCORRECT!!!\n"); a++; } else { printf("\nWRONG!!!\n"); clear(); additionquiz(); } printf("\nWhat do you want to do next?\n1 - Answer another addition Question\n2 - Go back to main menu\n3 - Exit program\n"); scanf("%d",&amp;choice); if(choice==1) { clear(); additionquiz(); } else if(choice==2) { clear(); main(); } else if(choice==3) { exit(); } else { printf("%cPlease choose a number from 1 to 3",7); } } return 0; } /* The subtraction quiz */ int subtraction() { int a,diff,b,answer,choice; a=0; diff=1; b=a+diff; while(1==1) { if(a&gt;9) { a=0; diff++; } if(b&gt;9) { b=0; } if(diff&gt;9) { diff=0; } if(numbers[a]-numbers[b]&lt;0) { a++; subtraction(); } printf("%d - %d = ",numbers[a],numbers[b]); scanf("%d",&amp;answer); if(answer==numbers[a]-numbers[b]) { printf("CORRECT!!!\n\n"); } else { printf("WRONG!!!\n\n"); clear(); subtractionquiz(); } printf("\nWhat do you want to do next?\n1 - Answer another subtraction Question\n2 - Go back to main menu\n3 - Exit program\n"); scanf("%d",&amp;choice); if(choice==1) { clear(); subtractionquiz(); } else if(choice==2) { clear(); main(); } else if(choice==3) { exit(); } else { printf("%cPlease choose a number from 1 to 3",7); } } return 0; } /* multiplication quiz */ int multiplicationquiz() { int a,diff,b,answer,choice; a=0; diff=1; b=a+diff; while(1==1) { if(a&gt;9) { a=0; diff++; } if(b&gt;9) { b=0; } if(diff&gt;9) { diff=0; } printf("%d * %d = ",number[a],number[b]); scanf("%d",&amp;answer); if(answer==number[a]*number[b]) { printf("\nCORRECT!!!\n"); a++; } else { printf("\nWRONG!!!\n"); clear(); multiplicationquiz(); } printf("\nWhat do you want to do next?\n1 - Answer another multiplication Question\n2 - Go back to main menu\n3 - Exit program\n"); scanf("%d",&amp;choice); if(choice==1) { clear(); multiplicationquiz(); } else if(choice==2) { clear(); main(); } else if(choice==3) { exit(); } else { printf("%cPlease choose a number from 1 to 3",7); } } return 0; } /* Division quiz */ int divisionquiz() { int a,diff,b,answer,choice,remain; a=0; diff=1; b=a+diff; while(1==1) { if((numbers[a]&lt;numbers[b])||numbers[b]==0) { a++; clear(); divisionquiz(); } if(a&gt;9) { a=0; diff++; } if(b&gt;9) { b=0; } if(diff&gt;9) { diff=0; } printf("%d % %d = \n",numbers[a],numbers[b]); printf("What is the whole number?\n"); scanf("%d",&amp;answer); printf("What is the remainder? (0 if none\n)"); scanf("%d",&amp;remain); if(answer==numbers[a]/numbers[b] &amp;&amp; remain==numbers[a]%numbers[b]) { printf("\nCORRECT!!!"); a++; } else { printf("\nWRONG!!!"); clear(); divisionquiz(); } printf("\nWhat do you want to do next?\n1 - Answer another division Question\n2 - Go back to main menu\n3 - Exit program\n"); scanf("%d",&amp;choice); if(choice==1) { clear(); divisionquiz(); } else if(choice==2) { clear(); main(); } else if(choice==3) { exit(); } else { printf("%cPlease choose a number from 1 to 3",7); } } return 0; } </code></pre>
 

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