21 lines
644 B
C
21 lines
644 B
C
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#include<stdio.h>
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#include<math.h>
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int main() {
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int a,d,n,i,tn;
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int sum=0;
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printf("Enter the first number of the A.P. series: ");
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scanf("%d",&a);
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printf("Enter the total numbers in the A.P. series: ");
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scanf("%d",&n);
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printf("Enter the common difference of A.P. series: ");
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scanf("%d",&d);
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sum = ( n * ( 2 * a + ( n -1 ) * d ) )/ 2;
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tn = a + (n-1) * d;
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printf("Sum of the series A.P.: ");
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for (i=a;i<=tn; i= i + d ) {
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if (i != tn)
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printf("%d + ",i); else
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printf("%d = %d ",i,sum);
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}
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return 0;
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}
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