Running Your First Programs in C

One of my duties at National University of Engineering is to teach C to first year students.  I have talk about paradigms of programming and some history regarded to C language, starting with the year of creation 1969 – 1973 at AT&T Bell Labs and highlighting that the Linux kernel was written in C because of its power that let manage resources of the computer.

My first hello world!


Then, to compile the program we run the command gcc, to finally execute ithello

Working with numbers and operations

  1. Checking if the number is even or oddeven

The output for 3 and 8:odd

2. Check if a number is divisible by 9div9

The output for 27 and 50:test_div9

3. Determine the largest of three numberslargest

The output for integers and decimal numbers:test_largest

4. Enter three numbers and sort them in decreasing ordersorting

The output for the three numbers are:5. Having an angle in degrees, determine to which quadrant belongsquadrant

the output for the 190 degrees is:test_quadrant

6. Determine if a year higher than 1600, is a leaf-year or notleaf

The output for years higher than 1600 and less than ittest_leaf

7. Calculating the amount to pay the telephone billbill

the output for the basic plan and additional minutes and megabytes:bill_test

About Julita Inca

Ingeniero de Sistemas UNAC, Magíster en Ciencias de la Computación PUCP, Magíster en Computación de Alto Rendimiento de la Universidad de Edimburgo, OPW GNOME 2011, Miembro de la GNOME Foundation desde el 2012, Embajadora Fedora Perú desde el 2012, ganadora del scholarship of the Linux Foundation 2012, experiencia como Admin Linux en GMD y Especialista IT en IBM, con certificaciones RHCE, RHCSA, AIX 6.1, AIX 7 Administrator e ITILv3. Experiencia académica en universidades como PUCP, USIL y UNI. Leader of LinuXatUNI Community, HPC Software Specialist at UKAEA, and reviewer of the Technological Magazine of ESPOL-RTE, and volunteering Linux training for MINSA Peru... a simple mortal, just like you!
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