This program illustrates the more practical example of application of C-loops discussed in previous lession. This program calculates the sum of first n natural numbers. Complete source code and output of program is given here..
Source Code
Output
Source Code
1: // summation of first n natural numbers2: #include<stdio.h>3:4: int main(){5: int i, sum = 0; //for storing sum, initially must be zero6: int n;7: printf("Enter the number: ");8: scanf("%d",&n);9:10: for(i = 0; i <=n; i++){11: sum = sum + i;12: }13:14: printf("The sum of first %d natural number is %d\n\n", n,sum);15: return 0;16: }17:
Output
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